1. Solve the system using elimination. Ix-3y-9
|-x + 3y =-9
A no solutions
B (5, -6)
C (-5,6)
D infinite solutions

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.