Question

PROBLEM TYPE YOUR SOLUTIONS HERE
Section 3.1 pp. 219-222 #18
Add. Write the answer in lowest terms.


Section 3.1 pp. 219-222 #38
Evaluate the following. Write the answer in lowest terms.
9-3=13
13+ 7 = 16




Section 3.1 pp. 219-222 #44
44. Number problem. One task took 7 minutes (min), a second task took 12 min, and a third task took 21 min. How long did the three tasks take, as a fraction of an
hour? 12 + 7 + 21 =40

or 1 2/6

Section 3.1 pp. 219-222 #50
Geometry. Find the perimeter of the following triangle.
cm


Section 3.2 p. 228 #22
Find the least common multiple (LCM) for the following groups of numbers. Use whichever method you wish.
22. 12, 20, and 35 12: 12,24,36,48,60,72,84,96,108,120,133,144,156,168,180,192,204
216,228,240,252,264,276,288,300,312,324,348,360,372,384,396
408,420

20:
20,40,60,80,100,120,140,160,180,200,220,240,260,280,300,320
340,360,380,400,420,440

35:
35,70,105,140,175,210,245,280,315,350,385,420,455

420

Section 3.3 p. 241 #36
Add.
60 is the LCM

x20





Section 3.3 p. 241 #55
55. Business and finance. A budget guide states that you should spend 1/4 of your salary for housing, 3/16 for food, 1/16 for clothing, and 1/8 for transportation. What total portion of your salary will these four expenses account for? LCd = 16

x simplified is



Activity 7: Kitchen Subflooring
p. 247 Questions 1
1. What is the combined price for a 1/2-in. sheet and a 5/8-in. sheet?

NOTE that there are typing errors on this page of the textbook. All measurements in the paragraph should be listed as inches, not feet. #1


so we would add $ 17.88 + 19.13 = $37.01



Activity 7: Kitchen Subflooring
p. 247 Questions 2
2. What is the combined price for a 3/8-in. sheet and a 3/4-in. sheet?
#2


So we would add $14.99 + $21.36 = $ 36.35




Activity 7: Kitchen Subflooring
p. 247 Questions 3
3. What other combination of sheets of plywood yields the needed 1 1/8-in. thickness?
#3

This would cost 25.23 + 13.05 = 38.28


1 + This would cost 9.15 + 28.49 =37.64


Activity 7: Kitchen Subflooring
p. 247 Questions 4
4. Of the four combinations, which is most economical?
#4

The one that would cost the lest would be 1/8 in and 1 in .
9.15 + 28.49 = 37.64

Activity 7: Kitchen Subflooring
p. 247 Questions 5
5. The kitchen is to be 12 ft „e 12 ft. Find the total cost of the plywood you have suggested in question 4.
#5
12 x 12 = 144
144 x37.64 = 5,420.16


Section 3.4 pp. 254-257 #26
Perform the indicated operations.


LCD= 30











Section 3.4 pp. 254-257 #30
30. Statistics. Robin ran 5 1/3 mi on Sunday, 2 1/4 mi on Tuesday, and 3 1/2 mi on Friday. How far did she run during the week? LCD=12








mi
- 132
1

Section 3.4 pp. 254-257 #48
48. Business and finance. The interest rate on an auto loan in May was 12 3/8%. By September, the rate was up to 14 1/4%. How many percentage points did the interest rate increase over the period? LCD=8










Section 3.5 pp. 265 #14
14. Business and finance. Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than 1/50 of the sample to be defective. About how many defective bottles should Julio allow before rejecting the entire line?






So, I think she would only allow 1 bottles and she would reject the line.
Section 3.5 pp. 265 #16
16. Business and finance. Lunchmeat sells for about $3 per pound. You use about 1/2 pound per day for sandwiches. How much should you budget for lunchmeat over the next month (about 20 workdays)? One pound would last 2 days.
So, I would need 10 pounds of lunch meat.
3x10=$30 for lunchmeat
Section 3.5 pp. 265 #24
Estimate the following quotient.
17 11/12 we would round up to 18
6 1/10 we would round down to 5
18 divide by 5 would be

Do I have this right?

Answer 1

Yep.