9 Math Problems

1. Solve an equation: + 2 =

2. Solve for A: B = + C

3. A salesman is paid a base salary of $3,000 a month plus 15% commission of all sales over $6,000 during the month. How much must this employee sell in one month to receive monthly salary of $3,600? (Assign x, make an equation and solve for x).

4. Find the slope for the given equation of line: 2x + 5y = 10

5. What is the equation of the line on the graph? (find x- and y-intercepts for each equation below and compare them with the graph).

a) x - y = 6 b) 6x + y = 6 c) 3x - 2y = 6 d) 2x + 3y = 6

6. Solve system of equations using substitution technique:

4x + y = 17 x – 2y = - 7

7. Solve system of equations using elimination by addition technique:

3x + 2y = 7 5x – 2y = 1

8. Simple calculator costs $5 and scientific calculator costs $15. The store sold 12 calculators for total amount of $100. How many of each calculator was sold? (Assign x and y, create system of two equations and solve the problem).