Find the positive value of x that makes the following equation a true number sentence. x^{2}=81^{-1}

41/17 as a decimal rounded to the nearest hundredth

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function