Question

Evaluate 4x + 5y, when x = 7 and y = 10

My Explanation:
So, I picked 78. But the whole issue is that I can’t specifically “work it out”.

Question: How do you get 78? If you can give a kind answer, thank you very much. :)

Answer 1

You plug in the 7 for x and 10 for y in the equation 4(7)+5(10)=78

Answer 2

78

Explanation:

4(x) = 4(7) = 28 5(x) = 5(10) = 50

28+50=

78