Answer:
The correct option is D) reduce test scores by 4.56 for every school district.
Explanation:
Based on the information in the question, the relationship between test scores and the student-teacher ratio can be mathematically written as follows:
x = 698.9 - 2.28y .................... (1)
Where,
x = test scores
y = student-teacher ratio
The a slope of (-2.28) indicates the amount by which x will change whenever there is a change in y.
Therefore, when there is a decrease in the student teacher ratio by 2 (i.e. y = 2), we will have:
Change in x = -2.28 * 2 = -4.56
The negative sign therefore indicate that the test scores will reduce by 4.56 for every school district. Therefore, the correct option is D) reduce test scores by 4.56 for every school district.
Answer:
D, neither excludable nor rival in consumption, a tornado siren is a public good.
Explanation:
A tornado siren is a siren that is used to give emergency warnings to a large population of an impending danger or danger that has passed.
A tornado siren otherwise known as the civil defense siren is of public good and as such is not a rival neither can it be excluded from consumption.
Cheers
Answer:
Option (A) is correct.
Explanation:
Qx = 1000 - 10Px + 0.1I + 10Py
Suppose income of the consumer and the price of good x remains constant at
I = $100
Px = $10
Initial price of good y, Py = 10
So,
Qx = 1000 - 10(10) + 0.1(100) + 10(10)
= 1000 - 100 + 10 + 100
= 1,010 units
If price of good y increases to $20, then,
Qx = 1000 - 10(10) + 0.1(100) + 10(20)
= 1000 - 100 + 10 + 200
= 1,110 units
This will results in an increase in the quantity demanded for good x which shows that there is a positive relationship between the price of good y and quantity demanded for good x.
This indicates that good x and good y are substitute goods.
Answer:
The correct answer is letter "C": interest-rate risk.
Explanation:
Interest-rate risk is the threat that already owned investments will lose market value if new investments with higher interest rates come onto the market. It has a more direct effect on the value of bonds than stocks and is a major risk to all bondholders. Bond prices decrease and the interest rate increases and when bond prices increase it is because interest rate decreased.
