Please help me undertand this please

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.

if the angular bisector of an triangle bisects the opposite side, prove that the other two sides are equal.

(f+g)(x) = 3^x+10x+4x-2

      =3^x +14x-2

choice b