Answer:substitution
Explanation:The substitution bias is a weakness in the Consumer Price Index that overstates inflation because it does not account for the substitution effect, when consumers choose to substitute one good for another after its price becomes cheaper than the good they normally buy.
when the price of a product in the consumer basket increases substantially, consumers tend to substitute lower-priced alternatives.
Given:
Principal, P = 26500
term=5 years
Monthly payment, A = 695
Question: Find interest rate
Solution:
Unless there is a table available, there is no explicit formula to calculate interest. However, the interest rate can be solved for using the formula to calculate the monthly payment, as follows.

Substituting
P=26500
i=monthly interest rate to be found
A=monthly payment=695
n=5*12=60 months

Rearrange to give successive estimates of i by
I(i)=(695/26500)*((1+i)^60-1)/(1+i)^60
Try initial estimate of i=0.02 (2% per month)
I(0.02)=0.0182
I(0.0182)=0.01736
I(0.01736)=0.01689
....
Eventually we get the value to stabilize at i=0.016265, or
Monthly interest =
1.6265% (to four decimal places)
Answer:
D) Marginal utility of the last unit of each product consumed is the same.
Explanation:
To maximize utility with a given income constraint, a consumer must chose products to maximize utility. This can be done so that each extra dollar, which is the marginal income, spent on each of these products yields the equal marginal utility. For example if one product yields more marginal utility per marginal dollar spent, the consumer should reallocate their income so they consume more of this product and less of others, so much so that the utility derived from this product equals utility derived from other products.
Utility is maximized when these marginal utilities per marginal dollar spent coincide.
Hope that helps.