Use the inequality (x + 1)(x - 3)(x - 7)(x + 6) > 0 to answer the following question. What is the solution set for this inequality?
(-oo, -6] U[-1,3],[7, oo)
(-oo,-6) U (7,oo)
(-6, -1) U (3,7)
(-oo,-6) U(-1,3) U(7, oo)
(-oo, oo)

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?