If a=3, b=5, and c=2, what is a²c²+2(b+c)÷b

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288

If cos(θ)=2853 with θin q iv, what is sin(θ)?