Which of the following is the best thing to do as a first step in using substitution to solve the system of equations?
(3x + y=-3
2x-3y = -13
A. Solve the top equation for x.
B. Solve the top equation for y.
C. Solve the bottom equation for x.
D. Solve the bottom equation for y.

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-responsequestion. there are 15 questions on the test and the students have been given 55 minutes to complete itwhich value could replace x in the table? 5507-m23-m8(15-m)8(15)-m