Question

Lois and Clark each ordered 3 posters that each cost x dollers. The postage for 3 posters is $5. Lois wrote an expression for the total they both spent as 6x + 10. Clark wrote another expression for the total, saying that it represented the same cost: 2(3x + 5). If each poster costs $25, do the two expressions give the same amount?
A.Yes, Both expressions show the total value to be $160, as the two esspressions are equivalent
B.No, Lois' expression has a value of $160 and Clark's expression has a value of $155
C.No, The expressions are not equivalent, so the values are different
D.Yes, Both expressions show the total value to be $400, as the two expressions are equivalent

Answer 1

The two equations are equivalent.

The postage for 3 posters is $5.
Lois$ wrote an expression for the total they both spent as 6x + 10 6(25) +10
150 +10 = 160

Clark wrote another expression for the total, saying that it represented the same cost: 2(3x + 5). = 2(3x) + 2(5) 6x + 10 = 6(25) + 10 = 150+10 160

If each poster costs $25, do the two expressions give the same amount?