Multiply (x+3)(x-3) a) x^2 +6x+9 b) x^2 -9 c) x^2 + 6x-9 d) x^2 - 6x +9

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

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28