An object travels 4/5 mile in 1/2 hour. what is its speed in mile per hour

So,

If you mean "speed per hour," then we just have to double the numerator of the fraction.

4 * 2 = 8

The object's speed is 8/5 miles per hour or 1.6 mph.

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: