Question

Kali earns $8 per hour. She worked x hours on both Monday and Tuesday. She also worked 5 hours on Thursday. The expression which represents Kali’s earnings for the week is shown.

Image in screenshot!

Which number should go into the box to complete the expression?

Answer 1

I’m pretty sure it’s 8 I could be mistaken though

Answer 2

• The number that should go in the box in order to complete the expression is: 8

• i.e. the expression is: 2(8x)+5(8)

Explanation:

It is given that:

Kali earns $ 8 per hour.

This means that if she works for n hours then this earning for n hours will be given by: $ 8n

She works x hours on both Monday and Tuesday.

This means that the earning of x hours is: $ 8x

and hence the earning for both Monday and Tuesday is:$ 2(8x)

She also worked for 5 hours on Thursday.

Hence, the earning for Thursday is: 5×8=40

The total earning of the week is given by:

2(8x)+5(8)