Geometry homework... please help. Don't forget to explain how you got your answer please, thank you!

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase