Which of the following is equal to the rational expression when x=-1 or - 7? (x+1) (x-1) / (x+7) (x+1)

a. x+7/x-1

b. x-1/x+7

c. x+1/x+7

For the function, f (x) = - 5x2, find f (-4).

The metro the has 20 rows of seats with 18 seats in each row tickets cost five dollars the theaters income in dollars if All seats are sold is (20x18) x5 use properties to find the income

John makes 35% of his free throw shots. Sue makes 40% of her free throw shots. What is the probability that ... 1. John and sue both miss their shots? 2. John and Sue both make their shots? 3. John makes his shot and Sue misses hers? 4.

Amy is running in the 100-meter dash at her school's annual track meet. If Amy's speed is 8 meters/second, how long will it take her to run 100 meters?

1. Suzette ran and biked for a total of 34 mi in 3.5 h. Her average running speed was 6 mph and her average biking speed was 12.5 mph. How many hours did suzette run

What is the measure of Z in the parallelogram shown? A. 190 B. 90 C. 150 D. 30

Add. (2x4+x3-4x2+3) + (4x4-2x3-x2+10x+2) Express the answer in standard form. Enter your answer in the box.

A rectangular park has a width of 8/9 of a mile and a length 3/5 of a mile. Find the area of the park. Write your answer in simplest form, using a complete sentence explain your answer.

A female grey whale is 2 times as long as a female killer whale. A female killer whale is 7 meters long. How long is a female grey whalevin centimeters?

Raina's fish tank has 17 liters of water in it. She plans to add 5 liters per minute until the tank has more than 52 liters. What are the possible numbers of minutes Raina could add water? Use t for the number of minutes.