What system of equations would you use to solve the problem below? A test is worth 30 points. Multiple-choice questions are worth 1 point and
short-answer questions are worth 2 points. If the test has 20 questions, how
many multiple-choice questions are there?
A. m + s = 30
m + 2s = 20
B. m + s = 20
m + 2s = 30
C. m. s= 20
m 2s = 30
D. m + s = 3
m+2s = 50