Given that tan2theta=3/8,what is the value of sec theta

Suppose you are going to graph the data in the table. minutes temperature (°c) 0 -2 1 1 2 3 3 4 4 5 5 -4 6 2 7 -3 what data should be represented on each axis, and what should the axis increments be? x-axis: minutes in increments of 1; y-axis: temperature in increments of 5 x-axis: temperature in increments of 5; y-axis: minutes in increments of 1 x-axis: minutes in increments of 1; y-axis: temperature in increments of 1 x-axis: temperature in increments of 1; y-axis: minutes in increments of 5

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?