Question

Jason needs to save at least $200 by the end of the summer. He already has $40, and he has 8 weeks to save. Which inequality can he use to decide how much he needs to save each week?

Answer 1

Explanation:

y=mx+b

200 = 8x + 40

Rearrange,

x = 160/8 = 20

He would need to save $20 a week

200= 20 × 8 + 40

Answer 2

• 8x + 40 ≥ 200
• At least $20 each week

Explanation:

• Target amount = at least $200
• Jason already has = $40
• Time = 8 weeks
• Saved amount each week = x

Required inequality:

• 8x + 40 ≥ 200
• 8x ≥ 160
• x ≥ 160/8
• x ≥ $20