After going shopping we only had 10% of our money. We spent $180. How much money did we have at first?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

The graph shows the distance kerri drives on a trip. what is kerri's speed?