Question

Which expression has a value less than the given expression when x = 5?

3x + 15



A.2x²

B.x² + 5

C.3(x + 5)

D.4x + 5

Answer 1

D and C has the least value :)

Answer 2

A. The value of 2x² when x=5 is 50 because:

2(5)²=2(25)=50

B. The value of x²+5 when x=5 is 30 because:

5²+5=25+5=30

C. The value of 3(x+5) when x=5 is 30 because:

3(5+5)=3(10)=30

D. The value of 4x+5 when x=5 is 25 because:

4(5)+5=20+5=25

The answer is 4x+5 because it has the least value when x=5, so the answer is D.