(1+5/6)(1-5/6)

I don't understand it

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Which number line represents the solution set for the inequality -1/2x> 24?

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?