Agroup of friends on a camping trip has 325 lb of trail mix. they divide it up evenly among themselves. each person gets 15 lb of the trail mix. how many friends are on the camping trip?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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 bale to prepare using the sauce?