if you spend at least $50 (including shipping) at an online store, you receive a $10 gift card.

Question

 you want to purchase CDs that cost $12 each. if shipping costs $5. you must write and solve an inequality

Answer 1

Let X be the number of CDs.

 

12X + 5 >= 50 <--- They cost $12 each, $5 for shipping. Must spend $50 or more

 

12X >= 45

 

X >= 45/12 = 15/4 = 3 and 3/4

 

You must buy 4 CDs

They will cost $12*4+5 = 48 + 5 =$ 53 including shipping.

Then you will be eligible for the $10 gift card for your next purchase.