3. evaluate the problem below. show all your work for full credit. highlight or circle your final answer. (6 points). −4 +5 =

answer: write the problem as a mathematical expression. − 4 + 5 - 4 + 5 add   − 4 - 4   and   5 5 . 1 1

step-by-step explanation:

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:

so, converting firstly the mixed fractions to improper fractions and then "adding".