An adult human heart pumps about 600 gallons of blood per hour.

a: write a variable expression to represent the number of gallons the heart pumps in (h) ( h represents hours or heart? ) hours

or

b: find the number of gallons of blood the heart pumps a day

this question doesn't make any sense to me

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Which expression is equivalent to 3^3 + 2^2?

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?