Which choice below represents the correct domain for an exponential growth or decay function?

a. {x | x > 0}
b. {y | y > 0}
c. x= 0
d. {x | x e r}

Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm.it decreased by the same amount each year. what was the change in grandpa ernie's height each year