Sally and audrey had the same amount of money. after sally had spent $60 and audrey had spent $84, the amount of money sally had left was thrice as much as audrey's. how much money did sally have at first? use basic math, i need this by tomorrow. ( the bottom one )

Which of the following situations represents a linear relationship? a. theresa increases the distance she runs by 0.1 miles every week. b. the volume of a box depends on the length of box. c. the amount of money in a bank account increases by 1 percent each year. d. the population of a town doubles every 5 years.

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

What is negative 3/9 times negative 2/8 ?