Solve 2 cos^2 0=-1-sin^2 0 on the interval 0° ≤ θ ≤ 360°.

Which of the following best describes the graph below? a. it is a function, but it is not one-to-one. b. it is a one-to-one function. c. it is not a function. d. it is a many-to-one function.

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')