by what percent will the product of two numbers decrease if one of by 75% and the other is decreased by 25%

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2