Caleb is swinging rachel in a circle with a centripetal force of 533 n. if the radius of the circle is 0.75 m and rachel has a mass of 16.4 kg, how fast is rachel moving? round to the nearest tenth. m/s

Velocity = √((Centrifugal force *  radius)/mass)

Velocity = √(533 * 0.75 / 16.4)

Velocity = √(399.75 / 16.4)

Velocity = √24.375

Velocity = 4.9 m/s

the expression 15n + 2(3p) represents the amount isaiah spent buying gasoline and snacks, where n represents the price of each gallon of gasoline and p represents the cost of each snack that he bought. which statement is true about the amount isaiah spent?