Answer: a.) Mortgages can be repaid over a long period of time.
Instead of paying the money back all at once, it's beneficial to spread out the payments over 15 years or 30 years so that the monthly payments are small and manageable. Yes overall you'll pay more money than what you borrowed, but interest is involved with nearly every type of loan.
ANSWER:
2.33 foot
STEP-BY-STEP EXPLANATION:
We can calculate the distance from the staircase to the wall, by means of the trigonometric cosine ratio, which is the following:

Replacing and solving for x:

The distance would be 2.33 foot
The fraction equivalent is 1/3 = 2/6 because when u simplify 2/6 =1/3