Jan completes 60 trials of pulling colored marbles out of a bag. she pulled green 15 times. if there are 250 marbles in the bag, how many of them are green?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Eiko is wearing a magic ring that increases the power of her healing spell by 30%30\%30%30, percent. without the ring, her healing spell restores health points. which of the following expressions could represent how many health points the spell restores when eiko is wearing the magic ring?