Let the function \displaystyle ff be defined by \displaystyle f\left(x\right)=x^{2}+12f(x)=x 2 +12. If \displaystyle nn is a positive number such that \displaystyle f\left(3n\right)=3f\left(n\right)f( 3n)=3f(n), what is the value of \displaystyle nn?

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?