Find the value of f(-9) and g(-2) if f(x)= -5x-2 and g(x)=3xsquared -21x i put squared cause i can't put a little two

To prove p is equal to q using an indirect proof what would your starting assumption be?

Which interval for the graphed function contains the local maximum? [–3, –2] [–2, 0] [0, 2] [2, 4]

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