Question

A number r has 8 added to it and the result is multiplied by 4

Is it:
8x4
4(r+8)
4r+8
8+rx4
r+8x4

Answer 1

Explanation:

A number r has 8 added to it

r+8

Then the result is multiplied by 4

To make sure the addition is done first, use PEMDAS

so add a parenthesis so addition goes before multiplication

(r+8) * 4

or 4*(r+8)