Which statements are true about the trapezoid? not sure if i’m right

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?

Select the correct answer and solve for y

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0