COLLEGE MATH SYSTEMS OF EQUATIONS
posted by LimaBeans93 on .
1. Solve these systems of equations
a. 3x + 6y + 3z= 3
2x  y + 4z= 14
x + 10y + 8z= 8
b. x + y + 3z= 10
x + 2y + 3z= 4
x + 4y + 3z= 6
2. Solve these systems of equations word problems.
a. A movie theater sold 450 tickets to a movie. Adult tickets cost $8 and children's tickets cost $6. If the theater took in a total of $3,250 from ticket sales, how many of the tickets were adult tickets and how many were children's tickets?
b. Bond A pays interest of 8% per year. Bond B pays interest of 10% per year. You are to invest a total of $100,000 and earn exactly $9,500 interest per year. How much should you invest in Bond A and in Bond B? (round to the nearest cent)
c. At a certain college, all courses are either 3credit courses or 4credit courses. Suppose a student has taken 16 course and has 53 credits. How many 3credit courses and how many 4credit courses has the student taken?

This is not a homework dropoff service. If you expect to learn high school algebra in college, it's time you made an effort.

WOW. I know high school algebra. I am in the highest math class that freshman could even be in. I did all of the problems but those were tricky for me sir. I started them all but got stuck and I have proof. You shouldn't even respond if you're not going to offer any relevant help.

And also I was in a gifted program in high school and graduated with a math average of a 97.37. I made more than an effort and can prove it. Before you assume know the facts.

a. A movie theater sold 450 tickets to a movie. Adult tickets cost $8 and children's tickets cost $6. If the theater took in a total of $3,250 from ticket sales, how many of the tickets were adult tickets and how many were children's tickets?