6(a+12)-9=-2(a+6)
can someone me with this it is a multi step equation

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9