Bananas cost $0.75 per pound. Use an equation to determine the cost of 9 pounds.

$9.75
$16.50
$6.75
$7.50

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

43lbs of tomatos cost $387. how much would 41lbs cost