Combine the like terms to simplify the expression. 9x^2+8y^2+4y^2-3x

a) 6x+12y^2
b) 6x+12y^4
c) 9x^2+12y^2-3x
d) 9x^2+12y^4-3x

Need on this one asap im almost done with this subject

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?