Which ordered pair is the solution to the system of equations? x+y=4

x-y=-6

a. (2, 2) b. (1, −7) c. (−1, 5) d. (−2, 4)

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

The height above the ground (in feet) of a ball dropped from the top of a 30-foot-tall building after t seconds is given by the polynomial: ? 16t^2+30 what is the height of the ball after 1/2 second?