Need 795,643 in expanded form

What is the best reason for jacinta to have a savings account in addition to a checking account

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?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read