The elevation of a tree's root is -13 feet and spans a radius of 8 feet. if the elevation of the tree is 28 feet with branches that span a radius of 12 feet, what is the total length of the tree from root tip to top?

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

X+ y = 5 ; x - y =3 solve using linear combination

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?