3(x + 8) - 2 = 43 ???​

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

What is the correlation coefficient for the data? don't forget to turn the diagnoisticon (in the catalog menu of the calculator). r = answer (round to the nearest thousandth)

Find the value of the cosine for angle a