NO LINKS!! Describe the x-values for which (a) f is increasing or decreasing, (b) f(x) > 0 and (c) f(x) < 0.

a. The function is increasing when ___ and ___ decreasing when __ < x < ___.

b. The function is greater than zero when
___ < x < _ and _

c. The function is less than zero when _.

Find an equation of the line perpendicular to the graph.

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1