The function f(r) gives the area of a circle with radius r. it can be written in equation form as f(r) = 3.14r2. what is f(5)?

a. 28.14
b. 31.40
c. 246.49
d. 78.50

You and a friend went to the movies. you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?