Explain why 7 multiplied by x/7 = x

In one day Annie traveled 5 times the sum of the number of hours brian traveled an 2. together they traveled 20 hours. find the number of hours each person traveled

Determine whether the equation defines y as a function of x. |x| - y = 9

The price of a technology stock was $9.61 yesterday. Today, the price rose to $9.72. What is the percentage increase?

Jessica has been tracking the population of a town. The population was 8,230 last year and has been increasing by 1.25 times each year. How can Jessica develop a function to model this? f (x) = (8230 • 1.25) x where 1.

Simplify the expression 8+3d-17

Select the expression that equals-3 - (-5). A - 3 + (-5) B - - 3 + (-5) C - - 3+5 D - 3+5

X and Y are independent random variables. X is normally distributed with mean 1 and variance 1. Y is normally distributed with mean 3 and variance 5. What is the variance of Y - 2X?

Simplify - 2/3 - 3/5.

Alive, Kathy and Sheila work as medical assistant at valley clinic. Alice has work 8 years longer than Kathy. Kathy has worked half as long as Sheila. If Sheila has worked at the company for 10 years how many years has Alice worked there?

A population of bacteria grows by a factor of 1.32 in one hour. What is the hourly growth rate?