What is the equation that has an x intercept of 4 and yintercept of 2. Show your work please

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?

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount