2x - 3y = 9
-5x – 3y = 30
Elimination method

The solution to the system of the equations be:

Step-by-step explanation:

Given the system of equations

Solving the system of equations using the elimination method

Multiply by 5:  

Multiply by 2:  

adding the equations

now solving -21y = 105 for y

Divide both sides by -21

Simplify

For 10x - 15y = 45 plug in y = -5

Apply the rule -a(-a) = a

Subtract 75 from both sides

Simplify

Divide both sides by 10

Simplify

Therefore, the solution to the system of the equations be:

The graph of the solution to the system of equations is also attached below.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.