How to reduce and convert fractions to percentage

Roscoe had c number of baseball cards in his collection. Today he went and bought 15 more baseball cards. Write an expression in terms of c for the number of cards he has now.

Steve made $50 and $75. he gave away 60%. how much did steve give away?

How do you find the smallest positive integer k such that 1350k is a perfect cube?

What does best approximates of 35,000,000 x 9 mean?

If 2 kilograms of strawberries cost $4.50, how much would 3 kilograms cost?

The owners of a motel in Florida have noticed that in the long run, about 40% of the people who stop and inquire about a room for the night actually rent a room.

What is the hardest part / subject in math?

The graph shows a line joining two complex numbers. What are the two complex numbers?

Translate the sentence into an equation. Five more than the quotient of a number and 8 is 2. Use the variable for the unknown number.

A garden supply store sells two types of lawn mowers. The smaller mower costs $249.99 and the larger mower costs $329.99. 30 total mowers were sold and the total sales for a given year was $8379.70.