Answer:
Holly must save $2845.81 at the end of each year
Explanation:
first calculate the value of tuition fees at n = 18
Cash flow formula = Tuition ×
Discounted CF formula = Cash flow ÷
10.00% 0
Year Cash flows Discounted CF
0 33,799.32 33799.32
1 36,165.28 32877.52
2 38,696.84 31980.86
3 41,405.62 31108.66
FV = $129,766.37
PV = 0
N = 18
rate = 10%
using PMT function in Excel
Annual contribution = $2845.81
Answer: Her income elasticity of demand for cottage cheese is <em><u>0.3333</u></em> making it a <em><u>normal and necessary</u></em> good.
The income elasticity of demand is given by :
The percentage change in income is given as 60%. We calculate the percentage change in quantity demanded as follows:
Substituting the value above in the income elasticity demand formula we get,
<u>YED = 0.33333</u>
Since the income elasticity is positive, and since Shawna buys more cottage cheese after an increase in income, we can classify this good as a normal good.
Since the income elasticity is between 0 and 1 we can also conclude that cottage cheese is also a essential good or a necessity.