How many liters of a 30% salt solution should be mixed with a 80% salt solution to obtain 120 liters of a 60% salt solution? solve with algebra and show work

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

What is the absolute value of -100000000000000?