Answer:
a
Step-by-step explanation:
because they spent the least of money on flowers
Answer:
57.5 degrees
Step-by-step explanation:
Assuming this is a triangle
a is adjacent is ∠B
b is opposite of ∠B
Use the inverse tangent equation: 
This equals to 57.52880771
Answer:
The solution will be negative.
Step-by-step explanation:
I'm not quite sure what sort of answer you're looking for though.
When x=9 the expression is undefined.
That is because any number over 0 is undefined, including 0/0.