Evaluate the expression for the given value of x

-3 times square root of x-7 when x=121

6 times square root of x+3 when x=100

square root of x/x when x=4

square root of x-17 when x=25

Number 1: square root of 121 is 11

So 11-7 = 4 and 4 (-3) = - 12 answer: x=-12

Number 2: 10 is the square root of 100

So 10+3 is 13 and 13 (6) = 78 answer: x=78

Number 3: square root of 4 is 2 so substitute x for 2

Giving us 2/2=1 answer: x=1

Number 4: square root of 25 is 5

So 5-17=-12 answer: - 12