An oil company fills 1 over 12 of a tank in 1 over 3 hour. at this rate, which expression can be used to determine how long will it take for the tank to fill completely?
a) 1/12 x 3 hours
b) 1/3 x 12 hours
c) 1/3 x 1/12 hours
d) 3 ⋅ 12 hours

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Bring the fraction a/a-4 to a denominator of 16-a^2