HELP PLEASE I WILL MARK YOU AS A BRAINLIEST!!

1)Which expression represents twice the sum of a number (t) and 15?

a.) 2(t +15)
b.) 2x t + 15
c.) (2+1) x 15
d.) 15 + t x 2

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

What is the greater volume 72 quarts or 23 gallons

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