Yes, you are right, if it approaches from the left, the limit is infinity and if it approaches from the right, the limit is negative infinity. The limit does not exist because it reaches infinity as x approaches pi/2 and the limits are the same when the value is approached from the opposite directions.
1: 3.2
2: B. 1.6
3: C. 6.4
4: D. 17.92
I'm unable to see the table for 5, are you able to attach it?
The ratios are equivalent because you multiplied 18:4 by 2&3. And also you divided it by 2. I had the same homework!
He will earn $427.50 because $4.27 times 90 equals $427.50
