Which answer choice correctly uses grouping symbols to make an expression equal to 3744?6^2•(0.2 +5•20) (6^2•0.2+5)•20
(6^2•0.2)+(5•20)
6^2•(0.2+5)•20

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /