Which of the solids above uses the best units

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

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?