5x - 3 = -23 what's the answer? find "x" best answer get rewarded!

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

What is the difference between the equations of a vertical and a horizontal line?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.