How many ways can eight letters be arranged into groups of five where order matters and the first two letters are already chosen? 100
120
240
720

Plzzz asap what is the inverse of f if f(x)=^3 sqrt x-5

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

What is the perimeter of an equilateral triangle if each side is (x+3)?