Question

Let x = 20. Which expression has a value greater than 4x−10 ?

A. 5 x-30
B. 8(x-10)
C. 5 (2x-26)
D. 5x-100

Answer 1

4x - 10 = 70


5x - 30 = 70
8(x - 10) = 80
5x - 100 = 0

Therefore, option B would be the correct answer. :)

Answer 2

first find the value of 4x-10
4x-10=
4(20)-10=
80-10=
70

A. 5x-30=5(20)-30=10-30=70, nope
B. 8(x-10)=8(20-10)=8(10)=80 yep
C. 5(2x-26)=5(2(20)-26)=5(40-26)=5(14)=70, nope
D. 5x-100=5(20)-100=100-100=0, nope



answer is B