Explain how you know the number of decimal places that should be in the product

The number of decimals in a product is the sum of the number of decimal places in each factor.

Example:

Suppose we have 1.3 and 2.6, which have one decimal place each.  We can expect the product to have 2 decimal places.

1.3 * 2.6 = 3.38 has 2 decimal places.

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: