Express each equation in standard form and give the coordinates of the centre, or, in the case of a parabola, the
vertex.
17. 9x2 + y + 36x = 9
18. ?+? - 2x + 4y = 5
19. 9x? - 4y - 8y + 32 = 0
20. 3x² + 12x - 4y - 12 = 0

Plz show ALL STEPS and plz HURRY

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Round each decimal to the nearest thousandth. a. 5.39562 b. 0.12345 c. 5634 d. 18.93763

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?