Write an expression that can be used to solve the problem.

During practice, it took Shawn 27 min to swim 81 laps.

If Shawn swam at a constant rate, how long did it take him to complete each lap?

A. 27 x 81

B. 27+81

C. 81/27

D. 27/81

A student's course grade is based on one midterm that counts as 15% of his final grade, one class project that counts as 15% of his final grade, a set of homework assignments that counts as 35% of his final grade, and a final exam that counts as 35%

The middle school band has 56 members. The high school band has 96 members. The bands are going to march one after another in a parade. The director wants the arrange the bands into thre same number of columns.

Devon pays $24.95 for her roller skates. After that she pays$3.95 for each visit to the roller rink. What is the greatest number of visits she can afford if the total amout she spends cannot be more than $76.30

Solve this: 4x + 3 (12x + 8)

What is the placement value in the digits 4s in the numbers 4,448

The eights of the students in ms. Mill's class ride the bus. if there are 24 students in the class, how many students ride the bus? Explain how to use equivalent frations to solve

When a product of intergers has an even number of negative factors then the sign of the product is what

Use full sentences to describe why the product of x^3 and x^7 is x^10

What is the domain? y = - 3x2+4x-6

60 customers per hour arrive randomly (i. e., cva = 1) and randomly join one of 6 unpooled queues. each of the six employees can handle exactly 15 customer requests per hour (i. e., no variability).