At the sewing store, Kristen bought a bag of mixed buttons. The bag included 60 buttons, of which 70% were large. How many large buttons did Kristen get?

The sum of two numbers is 86, and their difference is 20. find the two numbers

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction

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?