Let f(x)=-2x-3 and g(x)=x2+5x

Find f(-4) - g(1)

For what value of x does 4x = (1/8) x + 5?

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

What is the total surface area of this square pyramid?