How are factors and products connected

Which number line correctly shows 0.8 + 0.3?

Find the amplitude of a sinusoidal function that models this temperature variation

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work