How to solve -2(x+5)^2+18 by completing the square

What value of x will make the triangles similar by the sss similarity theorem?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?