Which expression can be used to find the area of a circle with a diameter of 40 cm?
a. 3.14 x 20
b 3.14 x 40
c 3.14 x 20 2
d 3.14 x 40 2

The slope of a line is -1/2 . what is the slope of a line that is parallel to it? a. 1/2 b.2 c. -1/2 d. -2

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1

Consider the expression below. 9 + 4(x + 2) – 3.1 select the term that best describes "3" in the given expression. o a. coefficient variable exponent constant