In which of the following expressions is the coefficient of term "x" 1? 2x2−3x+12 x squared minus 3 x plus 1

3x2−x−53 x squared minus x minus 5

2x2+x−92 x squared plus x minus 9

x2+2x+7

Which of the following contains a variable?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?