Question

4. If ×=4, which of the following expressions does not equal 9? A. x - (-5) B.x + 5 C. 2x + 1 D. X - 13

Answer 1

D. X-13

Explanation:

Since x=4

A. (4)-(-5)=9

Since a negative number times, a negative sign (minus) would make the number positive

B. (4)+5=9

C. 2(4)+1=9 (2*4=8, 8+1=9)

D. (4)-13=-9 (If you had a number line and you went back 4 spaces from -13, that would get you -9)