Two pipes can fill a tank in 87 minutes if both are turned on. if only one is used, it would take 23 minutes longer for the smaller pipe to fill the tank than the larger pipe. how long will it take for the smaller pipe to fill the tank? (round your answer to the nearest tenth.)

Which problem could be  solved  by evaluating the expression  7×(−3)7×-3?

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

Write a description of each inequality. 1. -5a + 3 > 1 2. 27 - 2b < -6 (this < has a _ under it) 3. 1/2 (c + 1) > 5 (this > has a _ under it)