Solve the following system of equations.
x + y = 12
x – y = 6
(9, 3)
no solution
infinite number of solutions
(3, 9)

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Acircle has a circumference of 7.850 units. what is its radius?