Question

Savannah buys a $40 gift card to her favorite smoothie shop. Each smoothie costs $4. She wants to have at least $10 left on her

card at the end of this month. The inequality below relates x, the number of smoothies she could buy between now and the end of
this month with her gift card balance.

Answer 1

I think the most simple way to solve this is by writing out a few general expressions;

$40 - $10 = $30

$30 - 4x = y

$10 + y = z

X = Amount of Smoothies

Y = Total Amount left

Z = Total + the $10

Answer 2

It would be D.

Explanation: