Question

If x=6 and y=17 evaluate the following questions:

4x + 5y

Answer 1

4x+5y
substitute
4(6)+5(17)
24+85
=108

Answer 2

4 x 6 + 5 x 17 = 109

Because 4x is another way to say 4 x a number, or in this case, 6. Same thing with 5y. 5 x a number, or, again, in this case, 17. Multiply the two, and add the products, which gives you 109.