Question

Need someone to help me on this problem.

Answer 1

Hello!

We need to get a number that is greater than or equal too 120. First of all, let's calculate the sales tax.

120(0.07)=8.4

120+8.4=128.4

This gives us the inequality below.

7.5w+44≥128.4

Now we solve like an equation.

7.5w≥84.4

84.4/7.5≈11.25

w≥11.25

As you can see, the only number greater than 11.25 is D) 12 weeks which is our answer.

I hope this helps!