What is the value of the expression 3a + bc - c when a = 8.6, b = 2.3, and c = 0.47?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?