Advanced Mathematical Decision Thinking Semester 2 Pre-test
19. You charged $658.17 on your new credit card for your college textbooks. Your credit card has
an introductory APR of 6.8% for the first 6 months which gave you a monthly payment of
$111.88. Assuming you managed to pay off the credit card in 6 months, how much of what
you paid back was interest?
A. $11.13
B. $671.28
C. $13.11
D. $680.86

The function show two sisters' savings account and the rate at which they plan to deposit money

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)

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?