Devon started a bike race at 11: 30 a. m. and he finished the race at 3: 17 p. m. how long did it take devon to finish the race?

a) 2 hours 47 minutes
b) 3 hours 13 minutes
c) 3 hours 17 minutes
d) 3 hours 47 minutes

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

Wrote and expression for the difference of p and 4

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle