D
Step-by-step explanation:
Estimating 1,596 will give you 1,600. Estimating 42 will give you 40. Dividing 1,600 ÷ 40 will give you 40. So, the answer would be D.
answer: b
step-by-step explanation:
x2 = 16
x can not be a negative number because 16 is positive
the only answer would be positive 8