Molly owes her brother $300.she works for $10 per hour as a checker at the local grocery store. molly plans to repay her brother half of what she earns after taxes of 20% are taken out. identify the expression which represents the condition described

(.5)(.8)(10x) ≤ 300

she gives him half of 80% of her $10 an hour (x is hours) but only until she has given him $300

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.