Andrew has 18 invitations to write. if he writes 3 invitations a day , how many days will it take him to finish? what type of problem is this array division, equal division with unknown group size, equal division with unknown multiplier

Which is the graph of the function y=2(4)^x

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

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