EASY QUESTION** Just give me any equation with two turning points and intercepts the x axis three times

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .