Find the local and global extrema for the polynomial function f in the given graph.
a. the local maximum is 98 at x = -1. the local minimum is -160 at x = 7. there is no global maximum or minimum.
b. the local and global maximum is 98 at x = -1. the local minimum is - 160 at x = 7. there is no global minimum.
c. the local maximum is -1 at x = 98. the local minimum is 7 at x = -160. there is no global maximum or minimum.
d. the local and global maximum is 98 at x = -1. the local and global minimum is -160 at x = 7.

How many zeros does the function f(x)=4x3-x2+1 have

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?

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?