> Question 2 of 16 5л Find an equation of the tangent line to f(x) = 4 sec (x) at x = 6 (Express numbers in exact form. Use symbolic notation and fractions where needed. Express equation in terms of y and x, where y is the dependent variable and x is the independent variable.) equation:

Assume that all variables represent real numbers. Determine whether each equation determines y to be a function of x. x=|y|

The resistance of a copper wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. A copper wire with a diameter of 0.0126inch has a resistance of 64.9ohms per thousand feet. What length of 0.0201-inch-diameter copper wire will produce a resistance of 33.5ohms?

D = R = Function?

A weather balloon is being inflated so that the radius is changing with respect to time according to the equation r= t + 1, where t is time in minutes, ad r is radius in feet. If the formula in expressing the relationship between the volume V and radius r of a sphere V - 4/3pir^3, then write a composite function f(t) to represent the volume of the weather balloon after t minutes