Jerry wants to make a call to columbia. there's an initial cost of $1.30 for the first 3 minutes and $0.75 for every additional minute. if his call lasts 8 minutes how much will that cost him?

3x^3-x^2+6x-9

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: