What is the approximate volume of a cone with a height of 10 inches and a diameter of 6 inches? use 3.14 to approximate pi round the solution to the tenths

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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?