Use a calculator to work these exercises. (See Examples 1 and 2.)The distance from Toronto...

Use a calculator to work these exercises. (See Examples 1 and 2.)

The distance from Toronto, Ontario to Dallas, Texas is approximately 1200 miles. A plane flying directly to Dallas passes over Toronto at 2 p.m. If the plane travels at 550 mph, find the rule of the function f(t) that gives the distance of the plane from Dallas at time t hours (with t = 0 corresponding to 2 pm).

Example 1

Finance If you were a single person in Connecticut in 2013 with a taxable income of x dollars and x ≤ $500,000 then your state income tax T was determined by the rule

Example 2

Suppose the projected sales (in thousands of dollars) of a small company over the next 10 years are approximated by the function