If p = a^2 + a - 1 and r = –a - 1, which expression represents p + r
a) a^2 + 2
b) a^2 - 2
c) a^2 + 2a
d) a^2 + 2a - 2

Find the value of the variable and the length of each secant segment.

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

At 6 1/2 cents per pound of string beans how much does 7 pounds cost