1)Suppose x = 2y - 7. What is x, if y = 5?

Question

A) 0
B) 1
C) 3
D) 5

2)Consider the net of a triangular prism where each unit on the coordinate plane represents four feet. If a sheet of plywood measures 4 ft x 8 ft, how many sheets of plywood will a carpenter need to build the prism?


A) 2
B) 3
C) 4
D) 5

3)
Which data set does the box plot represent?


A) {54, 66, 81, 80, 57, 53, 69, 68, 70, 60, 70}
B) {56, 66, 81, 80, 57, 55, 69, 68, 71, 60, 70}

C) {54, 66, 79, 78, 59, 56, 69, 71, 70, 60, 70}
D) {56, 66, 83, 80, 58, 58, 69, 68, 70, 60, 71}

4)Find the area of the polygon.


A) 96 cm2
B) 192 cm2
C) 208 cm2
D) 224 cm2

5)Evaluate if x = -3

3x - 4


A) -13
B) -7
C) -1
D) 5

6)Consider that point A is located at (x, y) in Quadrant I of the coordinate plane. In which quadrant is point B with coordinates (-x, y) located?

7)Which equation is BEST illustrated by the picture?

A) 3(10 + 2) = 10(2) + 3(2)
B) 3(10 + 2) = 3(10) + 3(2)
C) 3(10 + 2) = 3(10) + 2
D) 3(10 + 2) = 3(2) + 10

( Please help having trouble trying to calculate and understand this )

Answer 1

1 is easy. Substitute 5 for y and solve the equation.

I'll be glad to check your work and answer for number 1. Then, I'll help you with the second one.

Answer 2

x = 2(5)-7

2*5 =10
10 - 7 = 3

x = 3

am I right ?

Answer 3

Yes, 3 is right.

2. Sorry, but I don't understand that problem.

3. and 4. Insufficient information

5. This looks easy. Substitute.

6. I don't know.

7. No picture.

Please repost questions 2 and 6 and a more knowledgeable math tutor may be able to help you.

Answer 4

5) Answer is A

3(-3)-4
-9+-4 = -13

(Remember to switch the signs when subtracting negative numbers)

Answer 5

#1 = 3.
x = 3.