If<span> f′(x) > 0, then f is </span>increasing<span> on the interval, and </span>if<span> f′(x) < 0, then f is </span>decreasing<span> on the interval. This and other information may be used to show a reasonably accurate sketch of the graph of the </span>function<span>. Example 1: For f(x) = x </span>4<span> − 8 x </span>2<span> determine all intervals where f is </span>increasing<span> or </span>decreasing<span>.</span>
Answer:
2 hours and 20 minutes
Step-by-step explanation:
This looks one hundred percent correct to me and to check your answer you can plug in the answer you find to the first equation
17=37+4f
17=37+4(-5)
17=37-20
17=17
great job!!