Multiply 4x 1/2. and 1/2 x3/4. also 3/4 x1/3. need with this

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

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.