What is (-i)^5?

a. 1
b. i
c. -1
d. -i

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

If g(x) is an odd function, which function must be an even function?

Measures of the angle of r, 31 s (x+4) t (3x+9)