Solve the system of equations using elimination. make sure to show all work and find the value of both x and y
x-3y = 7
3x + 3y = 9
8x+ 3y = 1
4x + 2y = 0

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

Qrst is a parallelogram. determine the measure of ∠q pls