Answer the questions please and show your work (typing not handwriting)

Solve each system by substitution

1)y = 7x 11

2x 4y = 7

2) 6x 3y = 1

y = x 5

3)y = 6x + 5

9x 4y = 3

4)6x 3y = 3

y = 5x 17

5)y = 2

4x 3y = 18

Using the Quadratic Formula

6) Solve the following equation with the quadratic formula

x^2+4x+3=0

7) Solve the following equation with the quadratic formula

2x^2+3x-20=0

8) Solve the following equation with the quadratic formula

4b^2+8b+7=4

9) Solve the following equation with the quadratic formula

2m^2-7m-13=-10

10) Solve the following equation with the quadratic formula

9n^2=4+7n