10 ft to 7 ft. describe the percent of change as an increase or decrease.

percent change = (new number - old number)/(old number) * 100

percent change = (7 - 10)/(10) * 100

percent change = -3/10 * 100

percent change = -30%

A negative percent change is a decrease.

A positive percent change is an increase.

This change is a -30% change, or it can be described as a 30% decrease.

the expected value of the random variable : 0, 1 and 2

step-by-step explanation: