Simplify the expression. 10 in the power of 0

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

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

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