4. What must be the value of n to make the following equation true? 21/ n = 3/ 10

A bullet is fired straight up from a BB gun with initial velocity 1120 feet per second at an initial height of 8 feet. Use the formula h=16t2+v0t+8 to determine how many seconds it will take for the bullet to hit the ground. (That is, when will h=0 ?)

Explain the difference of finding the nthroot of a number when the index is even compared to when the index is odd.