Which transformation of f(x)=3^x does h(x)=-3^x-7 represent?

Find the greatest common factor of 28 and 35

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

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