Suppose there are 20 questions on a multiple-choice test. if 25% of the answers are choice b, how many of the answers are not choice b?

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).