Find values of x, y, and z, so that a given expression equals 18.

In a mathematics contest, how many of your team’s answers were incorrect and how many problems were unanswered?

How many coins does Kate have?

Determine the distance and time required for Amel to overtake Bonne, Amel’s younger brother.

Two frogs have a race. Determine which frog wins the race.

When will Parneshia’s bank have twice as much money as John’s?

Determine the age of each daughter.

Given the sum of two positive integers, determine the smallest possible sum of their reciprocals.

Determine the relationship of a group of positive integers that has 2 common divisors.

Determine which algebraic expression is greater.