The amount of water in a sea evaporates (decays) exponentially at a rate of 15%. If the initial amount
of water is 20,000 tons, what will be the amount of
water left after 20 years?
How many tons?

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?