Order the numbers from least to greatest.
3 39/40, 3 19/20, 3 1/2
answer choices
a. 3 19/20, 3 39/40, 3 1/2
b. 3 1/2, 3 39/40, 3 19/20
c. 3 39/40, 3 1/2, 3 19/20
d. 3 1/2, 3 19/20, 3 39/40

Really need on these. i have no idea what to do

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 8 = -6x a. –7.12, 1.12 b. 7.12, –1.12 c. 7.12, 1.12 d. –7.12, –1.12

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