Question

PLASE, I NEED HELP

Write and solve an inequality.
Kelvin and Marsha are going to dinner and a movie this evening. Kelvin wants to have at least $70 cash in his wallet. He currently has $10. How much money, x, does Kelvin need to withdraw from the bank?
A. x + 10 > 70; x > $60
B. x + 10 ≥ 70; x ≥ $60
C. x + 10 < 70; x < $60
D. x + 10 ≤ 70; x ≤ $60

Answer 1

B. x + 10 ≥ 70; x ≥ $60

Explanation:

Given:

• x = money (in dollars) Kelvin needs to withdraw from the bank.
• $10 = money Kelvin currently has.
• $70 = the least amount of cash Kelvin wants to have in his wallet.

The equation that models the given parameters is:

• 
  `x + 10 \geq 70`

To solve for x, subtract 10 from both sides of the equation:

`\implies x+10-10 \geq 70-10`

`\implies x \geq 60`

Therefore, Kelvin needs to withdraw at least $60 from the bank.