Which expressions are equivalent to 2(2x+1)

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g