If cos theta=-2/5 and tan theta>0 what is the value of sin theta

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account. write an expression to represent the total amount in his savings account.