What value of c makes 36x^2+84x+c a perfect square trinomial?
a) 49
b) 7
c) 9
d) 4

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.