2x^2 + nx -3= 21 a) solve using quadratic formula if n=4
b) solve using factoring if n=13
c) find the smallest interger value of n for which the equation has two interger solutions

What is the value of  y  in the solution to the system of equations? x  +  y  =  12x  –  3y  =  –30a. –8b. –3c. 3d. 8

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?