12. Sam's room and closet are represented by the irregular figure shown below. 21
(2x+5) ft
1 it
Seca's
Room
(2+2) Et
2x ft
(3x+4) Et
What is the perimeter of the entire room and closet as an expression in x feet?
A 21 ft.
B. 7x + 14 ft.
C. 8x + 11 ft
D. 8x + 14 ft.
O

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance