Can someone explain how to do number 35

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4