A movie rental company deducts $7 from Serena's account every
month for a year. After 1 year, how much do movie rental fees change
Serena's account?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Which number completes the inequality? 2/3 < _ < 7/9

How to find the exponential function y=ca^x, with points (1,2) and (2,1)