1 Consider the function f(x) = 2 sin(x)· √2 This function has two inflection points between x = 0 and x = 2, which occur at the z-values A and B, where 0 < A

If you travel 300 miles on the first day and then drive v miles per hour for t hours on the second day, then the total distance traveled over the teo-day period is given by d=300+vt miles. Use a formula to express v as a function of d and t for this two-day event.

Find the unknown value. 27. y varies jointly with x and the cube root of 2. If when x=2 and z=27,y=12, find y if x=5 and z=8.

Meteorology The normal monthly high temperatures H (in degrees Fahrenheit) in Erie, Pennsylvania, are approximated by Ht=57.5418.53cost614.03sint6 and the normal monthly low temperatures L are approximated by Lt=42.0315.99cost614.32sint6 where t is the time (in months), with t=1 corresponding to January (see figure). (a) What is the period of each function ? (b) During what part of the year is the difference between the normal high and normal low temperatures greatest ? When is it least ? (c) The sun is northernmost in the sky around June 21, but the graph shows the warmest temperatures at a later date. Approximate the lag time of the temperatures relative to the position of the sun.