Q2 - Algebra 1

Question

Ms. Hernandez boarded her dog at a kennel for 4 days. It cost \(18.90 per day, and she had a coupon for \)5 off. What was the final cost for boarding her dog?

Step-by-Step Solution

Answer

The final cost of boarding the dog at a kennel for four days by Ms. Hernandez is $71.

Step-1. Apply the concept of the four-step process for problem-solving.

A four-step plan is used to solve real-world problems with the help of mathematical tools.

Steps involved in the four-step plan:

1. Explore/Understand the problem
2. Devise a plan to solve the problem
3. Carry out the plan(solve)
4. Lookback (check and interpret)

Step-2. Explore/Understand the problem.

It is given that the per day cost to board dog at a kennel is $\$18.90$. Ms. Hernandez boarded for four days and she had a coupon for $5 as a discount.

 

An estimated answer is required for this problem since the cost in dollars is to be evaluated and money can be easily returned back.

Step-3. Devise a plan to solve the problem.

Total cost is per day cost to board dog at kennel multiplied by the number of days and then subtract the amount of discount coupon from it.

Step-4. Carry out the plan(solve).

Let the total cost of boarding the dog be C.

Therefore,

$C=18.90\times 4-5$

   $=70.6$

Round off the result to nearest tenth, we have C = 71

Step-5. Look back (check and interpret).

Since the total cost is positive and currency is always non-negative. So, the answer is verified.

Thus, the final cost of boarding Ms. Hernandez’s dog in a kennel is $71