Question

Which number is a solution of the inequality? Choose one:

-3x(10-x)>4

a. 2
b. -3
c. 1
d. 0

Answer 1

b

Explanation:

to determine which value gives a solution, substitute the given values into the left side of the inequality and check the validity

a

- 6(10 - 2) = - 6 × 8 = - 48 < 4 → 2 is not a solution

b

9(10 + 3) = 9 × 13 = 117 > 4 → - 3 is a solution

c

- 3(10 - 1) = - 3 × 9 = - 27 < 4 → 1 is not a solution

d

0(10 - 0) = 0 × 10 = 0 < 4 → 0 is not a solution