A small pump can drain a pool in 7 hours. A large pump could drain the same pool in 4 hours. How long​ (to the nearest​ minute) will it take to drain the pool if both pumps are used​ simultaneously? If both pumps are used​ simultaneously, it will take..... hours and.... minutes to drain the pool.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.