How much pure acid should be mixed with 7 gallons of a 40 % acid solution in order to get an 80 % acid solution?

F (x) = -3x2+2x-5 what is f (-1) ?

ben is filling up his cylinder shaped pool up to 80% of its capacity. If his is 6 feet deep and has a diameter of 18 feet, how much water will he put in the pool.

How do you subtract 206-118

18 months is the same as 1.5 years. a. True b. False is 18 months is the same as 1.5 years.

Drew estimates college tuition and fees, room and board, books, and other charges total $17,239. He will get a $1385 scholarship. Drew has 4 years to save. How much should he save per month to cover the costs of college (minus the scholarship) ?

Charles sold $800,000 worth of real estate last month. His commission for the month was $16,000. what rate of commission discharge received

Who's to make 28% to a decimal

Write 25:15 : : 5:3 as a fraction proportion

R:10+4=5 what does R euqe.

Is 3x=4 a linear function