What is a letter that represents one or more numbers

In 1980, the number of African elephants was 1,200,000 but that number was decreasing 5.25% a year. How many years did it take for the population to reach 1/2 of what it was originally? Use logs and round answer to the nearest tenth.

Sue and 4 friends buy a box of 362 baseball cards at a yard sale. if they share the cards equally ho many cards will each person receive? you divide so you either round up, keep it, or drop it ...

A solid cube has a density of 3 ounces per cubic inch. Which is closest to the side length (in inches) of the cube if its mass is 80 ounces?

Before the eruption of a volcano, the volcano was 2.75 kilometers high. After the eruption, the volcano was 2.25 kilometers high. Find the difference in height of the volcano before and after the eruption, in meters.

Which set of numbers is correctly ordered from greatest to least? 75,221,7.36,3.1617e 75,7.36, 20, 3.162/ze 3.16220,7.36, 221,7 3.167/2, 221,7.36,75

Jasmine buys the magic carpet on sale for / $374$374dollar sign, 374. Jasmine saved / $66$66dollar sign, 66 off the regular price. What percent was the price of the magic carpet discounted? / %%

Carlotta Rodriguez purchased six bushes for $19.27 each, a porch swing for $88.22, and a gas grill for $321.77. She must pay the state tax of 4.5% and the city tax of 2%. What is the total purchase price?

How to solve 1+4. x=-5+7. x

To avoid dehydration a person should drink 8 ounces of water for every 15 minutes of exercise how much water should hahn drink if he cycles for 135 minutes

Purple paint is made with a 16:3:1 ratio of white paint:blue paint:red paint. How much white paint, in gallons, is needed in order to make one gallon of purple paint? Express your answer as a common fraction.