1. Solve the system of equations by any method .

5x + 9y = 16

x + 2y = 4

Enter exact answer as pair (x,y) if there is no solution NS

2. Solve the system of equations by any method

-x + 2y = -1

8x - 16y = 9

Enter exact answer as pair (x,y) if there is no solution NS

3.Solve the system of equations by any method

-3x + 24y = 21

x - 8y = -7

Enter exact answer as pair (x,y) if there is no solution NS

4. Use a system of linear equation with two variables and two equations to solve.

A number is 11 more than another number. Twice the sum of the two number is 50. Find the two number and enter it in increasing order.

first number.

second number:

5 Use the matrices below to perform the indicated operation if possible

B= [-11 6], C = [ 0 9]

[ -4 3 ] [ 8 1]

2C + B =

6. Use the matrices below to perform matrix multiplication

B = [ 3 7 4] , C =. [ 5 11]

[-10 0 12] [ -4. 7]

[ -6 8]

BC =

7. Use the matrices below to perform matrix multiplication

B = [ 4 7 5], D = [ 4 -5 12]

[-8 0 12]. [8 5 1]

[ 0 7 -10]

BD =