How to turn a number into fraction form

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?