Find the discriminant of -7x2+2x+9=0, then state the number of solutions and the type of solutions.

b.-4 units

all you   do is count how many times you move

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

final total: 63

step-by-step explanation:

60 times sales tax

60 times 0.05

3

60 + 3

63