Can someone please tell me what is 100% of 45

The graph shown is the graph of which function?

Write the equation in logarithmic form e^x=403.429

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?