How many beats does your heart get on 15 hours? ? pls !

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

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?

With alll of except for the 2 that i did already