Una pelota se arroja verticalmente hacia arriba con una velocidad de 64 pies /s. La distancia recorrida en pies, después de t segundos está dada por la función: () = 64 − 162 Determina la velocidad instantánea para t=2 s y para t=3 s.

For the function, f(x) = -5x 2, find f(-4).

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?