The World Bank reported data on the number of cell phones in use worldwide.
2006 - 2.7
2009 - 4.6
2011 - 6.0
How does the rate of change from 2006 to 2009
compare
with the rate of change from 2009 to
2011?

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

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?

Maria solved an equation as shown below. what is the solution to maria’s equation?