Subtract 2x^2+6x-5from7x^2+3x+4

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?

How many grams the dog will eat in 3 days?

Given abc find the values of x and y. in your final answer, include all of your calculations.