A Ferris wheel in Chicago goes around one time during each 7-minute ride. The graph shows the height of a car on the Ferris wheel above the ground during a ride.

What is the difference, in feet, between the minimum and maximum heights of a car on the Ferris wheel?

A.0
B.3.5
C.140
D.150

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

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?