What is the volume of a cylinder with a height of 5.6 m and a base with a radius of 7.8 m, to the nearest tenth of a cubic meter?​

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?