Which expression represents the amount of money in Frank's account? Frank deposits $20 a week into his bank account for several weeks.
20+ d
7 d
20-d
20 d

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Consider the graph of the exponential function y=3(2)×

What ia the sum if the first 7 terms of the geometric series