754/30= 25 with a 4 left over
if everyone gets the chance to ride there will have to be 26 rides
So C is the answer
33 is composite
49 is composite
21 is composite
The answer is 15
these chords are congruent because the radius of the circle are perpendicular to the them
so we can find EF by making an equation:

so EF is = 3(15)+5=50
good luck