When comparing prices for activities at a local recreation center, you notice that the center charges different prices
on different days of the week. For example, riding a go-
kart costs $10 on Saturday and Sunday and $5 on
Monday through Friday.
Is the cost a function of the activity type? Explain why or
why not.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Collin did the work to see if 10 is a solution to the equation r/4=2.4

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?