Answer:
Step-by-step explanation:
Given ⇒⇒⇒ a(x)=50-1.25x
a(x) be the amount of money remaining on Hillary's gift card.
x number of apps purchased on her phone
∴ a(12) = 50 - 1.25 * 12 = 35
Which mean : She have amount of total money = 50
she purchased 12 apps costs 12 *1.25 = 15 . So , she spent 15
The remaining on Hillary's gift card = 50 - 15 = 35
The correct answer is :
a(12) =35 .
This means that purchasing 12 apps , Hillary has $35 left
