Please! my friend just need help with this.. there is 5 thats she needs answers to.. Write the equation of the line fully simplified slope-intercept form.

Carlos has 4/5 of a tank of fuel in his car. he uses 1/10 of a tank per day. how many days will his fuel last?

The triangles are similar. what is the value of x? show your work.

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.