Write an equivalent expression by distributing the "-−" sign outside the parentheses: -(-2.6m-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 able to prepare using the sauce?

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.