1. When y=kx, k is a constant and when y=50, x=12. Find y when x is 5.

2. If When a=10, b=20. Find b when a=15.

3. 8+12x is 18 more than 35. What is the value of 20x.

4. For what value of n is |n-2|+6 equal to zero?

5. A=1009 + 7.08t. Find an expression for time (t) in terms of a.

6. Sales (s) are a function of price (p). When price is $8.00, sales are $1800.00. What should price be in order for sales to reach $2100.00?