Write a fact family with 8, 9, and 72.

8 x 9 = 72

9 x 8 = 72

72 ÷ 9 = 8

72 ÷ 8 = 9

Step-by-step explanation:

A family of operations is a group of number expressions (operations) that use the same numbers. In this case (multiplication and division), the family of operations consists of two multiplications and two divisions.

In the multiplications the total of groups is calculated (72). While the divisions calculate the amount of each group (8 and 9).

For numbers 8, 9 and 72 the fact family is:

8 x 9 = 72

9 x 8 = 72

72 ÷ 9 = 8

72 ÷ 8 = 9

Hope this helps!

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:

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2