Question

I have done the work on all of these problems so please don't give me lectures about cheating, I'm not 8 years old.

1.Given the function rule f(x) = x^2-3x+2, what is the output of f(-2)?
A)-8
B)0
C)4
D)12***

2.The data in the table represents a linear function
X:-3,0,3,6
Y:-5,-3,-1,1
What is the slope of the linear function?
A)-3/2***
B)-2/3
C)2/3
D)3/2

3.Which function rule represents the data in the table below?
Input (x): 1,2,3,4,5
Output (y): 9,14,19,24,29
A)y=4+5x
B)y=3+6x
C)y=5+4x
D)y=6+3x***

4.The sale price of apples at a local grocery store is $1.35 for the first pound and $1.10 for each additional pound. Which function rule shows how the cost of apples,y, depends on the number of pounds x. A)y=1.10(x-1)+1.35***
B)y=1.10x+1.35
C)y=1.35x+1.10
D)y=(1.10+1.35)x

5.What are the first four terms of the sequence represented by the expression n(n-1)-5?
A)-7,-5,-3,-1
B)-5,-10,-15,-20***
C)0,2,6,12
D)-5,-3,1,7

6.Max charges $3.50 per hour when he mows lawns, plus $6.00 for transportation expenses. Which function rule represents the amount y max charges to mow lawns for x hours?
A)y=9.50x
B)y=6.00x+3.50
C)y=3.50x+6.00***
D)y=2.5x

7.What are the next 3 terms in the sequence?
-3,6,15,24
A)35,46,57
B)34,44,54
C)33,44,56
D)33,42,51***

8.Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 4 bulbs. In the second year, it produced 8 bulbs, and in the third year, it produced 16 bulbs. If this pattern continues, how many bulbs should Geoff expect in the tenth year?

A)2,048 bulbs***
B)1,024 bulbs
C)40 bulbs
D)32 bulbs

9.Which hill described in the table is the steepest? Explain.
Street|Horizontal distance|vertical rise

Dixie |80 |40
hill |

Bell |80 |20
hill | |

Liberty|80 |60
hill | |

A)Bell Hill;it rises 1 foot for every 4 feet of horizontal travel.
B)Dixie Hill; it rises 2 feet for every 1 foot of horizontal travel.
C)Liberty Hill; it rises 4 feet for every 3 feet of horizontal travel.
D)Liberty Hill; it rises 3/4 foot for every 1 foot of horizontal travel.***

10.Suppose you earn $12 each time you mow the lawn. Use function notation to describe the relationship between your total earnings E and the number of times m you mow the lawn.
A)E(m) = m + 12
B)m = 12E
C)E(m) = m – 12
D)E(m) = 12m***

Answer 1

They all look ok to me, except

#2. Recall that the slope is ∆y/∆x
pick any two pairs and see what you get

#3. Note that y increases by 5 for each step. You could not possibly have tried 3x+6 on more than one pair.

#5. Again, you clearly only tried n=1.