Tom slick buys a set of tires for his car. the price, including tax, is $950.00. tom finances the tires over 12 months after making a $50 down payment. the true annual interest rate is 18%. what are his monthly payments (principal plus interest)?

The price of the car is 950 dollars.
he paid 50 dollars for downpayment 
=> 950 dollars - 50 dollars = 900 dollars to be paid for 12 months 
=> 12 months = 1 year which have 18% annual interest.
=> 900 dollars * .18 = 162 dollars
=> 900 + 162 = 1062 dollars
=> 1062 / 12 = 88.5 dollars is his monthly

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

answer: the function g(x) has the greatest slope.

1. 5/82.95% is better than 7/8