Question

Which inequality is true when x = 0. 5 and y = 5?

A. 4xy > 11.5
B. 9y + x > 45.5
C. y - 2x < 3
D. 7xy < 18

Answer 1

D.
`7xy# < 18`

Explanation:

`4(0.5)(5) > 11.5`
`10 > 11.5` which is not true

`9(5)+0.5 > 45.5`
`45.5 > 45.5` which is not true (they are equal)

`5-2(0.5) < 3`
`4 < 3` which is not true

`7(0.5)(5) < 18`
`17.5 < 18` which is true so the answer is D