N 18. Answer the questions by comparing the equation, ft) = 7 cos Rz) = 7cos(? (2 +9)
+1, to the general equation, f(x) =acos
+d.
What direction and how many units did the graph shift vertically?
7 units up

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.

Ibelieve it’s 5 and then 3