What are the domain restrictions of q^2−7q−8 divided by q^2+3q−4 ? q≠1 and q≠−8 q≠−1 and q≠8 q≠−1 and q≠4 q≠1 and q≠−4

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

You have 37 coins that are nickels, dimes, and pennies. the total value of the coins is $1.55. there are twice as many pennies as dimes. find the number of each type of coin in the bank.

F(x)=3(1.54)^x whats this how do you do it