Instructors led an exercise class from a raised rectangular platform at the front
of the room. The width of the platform
was (3x - 1) feet and the area was
(9x² + 6x - 3) ft. Find the length of
this platform. After the exercise studio is
remodeled, the area of the platform will
be (9x + 12x + 3) ft. By how many feet
will the width of the platform change?

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?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Which of the following graphs could represent a cubic function?