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Estimate the total cost of six grocery items if their prices are \(\$ 4.23, \$ 7.79, \$ 28.97, \$ 4.06, \$ 13.43\), and \(\$ 0.74\).

Charlene decided to ride her bike from her home to visit her friend Danny. Three miles away from home, her bike got a flat tire and she had to walk the remaining two miles to Danny's home. She could not repair the tire and had to walk all the way back home. How many more miles did Charlene walk than she rode?

A full-time employee who works 40 hours per week earns \(\$ 19.50\) per hour. Estimate that person's annual income.

A storeowner ordered 25 calculators that cost \(\$ 30\) each. The storeowner can sell each calculator for \(\$ 35\). The storeowner sold 22 calculators to customers. He had to return 3 calculators and pay a \(\$ 2\) charge for each returned calculator. Find the storeowner's profit.

You lease a car at \(\$ 605\) per month for 3 years. Estimate the total cost of the lease.

An automobile purchased for \(\$ 23,000\) is worth \(\$ 2700\) after 7 years. Assuming that the car's value depreciated steadily from year to year, what was it worth at the end of the third year?

An automobile purchased for \(\$ 34,800\) is worth \(\$ 8550\) after 7 years. Assuming that the car's value depreciated steadily from year to year, what was it worth at the end of the third year?

If a person who works 40 hours per week earns \(\$ 61,500\) per year, estimate that person's hourly wage.

A vending machine accepts nickels, dimes, and quarters. Exact change is needed to make a purchase. How many ways can a person with five nickels, three dimes, and two quarters make a 45 -cent purchase from the machine?

How many ways can you make change for a quarter using only pennies, nickels, and dimes?