Which integer is NOT less than -21?
A. -30
B. -100
C -19
D -25

The circumference of a circle is 5 pi cm. what is the area of the circle?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.