Abike shop rents mountain bikes for a $4.50 insurance charge plus $2.30 for each hour. how many hours can a person run a bike for $20.60

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?

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13