Please help me answer this with the correct answer :) Explain your answer

I will give braisnlt :)
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Standard deviation of 19,29,21,22,23

Finding tbe values of the variables in each kite

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