If f(x) = x2 + x, find f(-3).
a) 6
b) -12
c) 3

Are carpet coast $15 per square metre. the total delivery charge is $21 peter buys n squared metres of carpet what is the expression which represents the total cost in $

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2