How many grams is 20 moles of (NH4)2SO4 please show work

What is the answer to the question 5x+2x

Anut store normally sells cashews for? $4.00 per pound and peanuts for? $1.50 per pound. but at the end of the month the peanuts had not sold? well, so, in order to sell 40 pounds of? peanuts, the manager decided to mix the 40 pounds of peanuts with some cashews and sell the mixture for $2.00 per pound. how many pounds of cashews should be mixed with the peanuts to ensure no change in the? profit?

The graph of f(x) = x is reflected over the y-axis. use the graphing calculator to graph this reflection. which list containsthree points that lie on the graph of the reflection?