The expression 2x(3x^2+4) can be simplified into which of the following?

a. 6x^3+4

b. 5x^3+6x

c. 6x^2+8x

d. 6x^3+8x

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?