Please help i need help as soon as possible on this

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?

Multiplying fractions by whole number 5 x 1/3=?