Creating/Solving One Variable Equations/Inequalities Practice Test

A medication dose starts at 200 mg. Each hour, 15% of the medication is eliminated (so 85% remains). Model the amount remaining after $t$ hours with an exponential equation and solve for when 50 mg remains.

Let $t$ = time in hours.

A tank is being filled by two hoses. Hose A can fill the tank in 6 hours and Hose B can fill the same tank in 9 hours.

Write and solve an equation to find how long it takes to fill the tank if both hoses run together.

Let $t$ = the number of hours to fill the tank together.