What is the positive solution to this equation? 3x2+16x=112

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.