A school paid 31.50 for each calculator If the school bought x calculators, how much did
they pay? Write an expression.

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

With finding limits of multi variable !

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.