Acooking school is teaching students how to make pasta noodles. the line plot displays how much flour each student used. how many total cups of flour did the students use to make pasta?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Rena used the steps below to evaluate the expression , when . step 1: substitute into the expression. step 2: simplify the parentheses. step 3: evaluate the power to a power. step 4: use reciprocals and find the value. in which step did rena make the first error?

This question is hard for me to answer can you me. the question is find the value of x.