How do u work out cost of sales

Ali was paid $75 for mowing a neighbor's yard. This is a fourth of the money he earned all summer. Write and solve an equation to determine how much money Ali earned all summer.

Taryn is hosting a party at a restaurant the restaurant is charging her $140 to rent the space and $19 per guest if taryn wants to spend less then $615 which inequality could be used to solve for x the number of guests taryn can invite

Jonas has 8 sponsors for the school walk-a-thon. Mara has 3 times as many sponsors as jonas. Trenton as many sponsors as Jonas.

How do I solve x2+10x-75=0

Find three geometric means between - 2/3 and - 54

A jacket cost 4 times as much as a pair of shorts. Together they cost $75. How much is each item?

A sailboat's sail has three sides that are all the same length. Each side measures x-10x-10 units. The sail's perimeter is 63 units. What is the value of x?

Two cars leave towns 1000 kilometers apart at the same time and travel toward each other. One car's rate is 20 kilometers per hour less than the other's. If they meet in 5 hours, what is the rate of the slower car?

5.96 to the nearest 1 decimal place

A country's population in 1992 was 72 million in 1998 it was 76 million what will the population be in 2012