Question

1.Mia charges $2.25 per hour when she babysits, plus $5.00 for transportation expenses.Which function rule represents the amount y mia charges to babysit for x hours?
A)Y = 2.25x + 5.00***
B)X = 5.00y + 2.25
C)Y = 5.00x + 2.25
D)Y = 7.25x

2.(So this one is my updated answer, because I did the work completely wrong the first time)
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***

3.Suppose you earn $10.00 each hour you babysit.Which function describes the relationship between your total earnings E and the number of hours you babysit, h?
A) E(h)= 10h***
B) E(h)= h + 10
C) E(h)= h - 10
D) E(h)= h = 10E

4.Which function rule represents the data in the table?
X:-3, -2, -1, 0, 1
Y:-1, 2, 5, 8, 11
A) Y = -3x - 8
B) Y = 1/3x - 8
C) Y = 1/3x + 8
D) Y = 3x + 8***

(The last 2 I actually need help with)

5.The data in the table illustrate a linear function
X: -3, 0, 3, 6
Y: -6, -2, 2, 6
A) -4/3
B) -3/4
C) 3/4
D) 4/3

6.Which quadratic rule represents the data in the table?(The up arrows indicate exponents)
X: -1, 0, 1, 2, 3
Y: 4, 5, 4, 1, -4
A) Y = -2x^2 + 5
B) Y = -x^2 + 5
C) Y = x^2 - 5
D) Y = x^2 + 5

Answer 1

your first 4 are correct

#5
you don't say what we are to find, looking at the choices, my guess is the slope
look at the last two ordered pairs (3,2) and (6,6)
slope= (6-2)/(6-3)
= 4/3

#5
Let's pick the easiest point, (1,4)
- it does NOT satisfy A), C) and D)
suggesting B
A quick mental check shows that the other points in your table also work in B

(notice -x^2 means that you have to square the number and them make the result negative, thus -x^2 will always produce a negative result)

Answer 2

Thank you SO MUCH Reiny