Use substitution to solve the system of equations. 5x+y= -24
x+3y= -2

a. x = -5,y = -1
b. x= 5, y =1
c. x= -5,y =1
d. x=5, y= -1

noncoplanar points are points that do not lie on the same line.

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation:

the answer is c hope this