A120 lb person would weight about 20 lb on the earth's moon .a 150 lb. person would weight 28lb. on lo, a moon of jupiter.

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)