College Algebra

Evaluate the function i(r) = 4r + 6 - 6 at the given values of the independent variable and simplify. a. {(-6) b. f(43) c. fol-6) E a. l( - 6) = [I {Simplify your answer.) b. f(43) = I] (Simplify your answer.) c. x - 6) = [j (Simpfy your answer.) + h - 2 Find the dllference quotient of i; that is. nd w. h at 0. for the following function. Be sure to simplify. r(x)=2x"-x-1 Write a piecewise function that models the cellular phone billing plan described below. Let I: represent the number of minutes used and 00:) represent the cost for those 3: minutes. Then graph the function. $20.00 per month buys 300 minutes. Additional time costs $0.25 per minute. average rate of approximately 1.3% per year shoe then. Find a linear function in slope-intercept form that models this description. The function should model the percentage of residents, P(x), who regularly used the news outlet 1: years H In 2000. 51% of the residents in a large city regularly used newspapers for getting news and this has decreased at an after 2000