Answer:
Step-by-step explanation:
It doesn't look right to me, but you may not have the choices I would want to use. I think it should go
1/2
cos^2
sqrt(x)
+ 2)
The square root covers just the x, and nothing more.
When you plug in 3 in for y the equation is 3x + 6(3) = 24
3x + 18 = 24
subtract 18 from both sides
3x = 6
Isolate the x by dividing both side by 3
x = 2
