How much interest is earned on a principal of $671.37 invested at an interest rate
of 4% for four years?

ANSWER:

The interest earned on a principle of $671.37 at an interest rate of 4% for four years is $ 107.42.

SOLUTION:

Given, p = $671.37, R = 4%, t = 4.

We need to find the simple interest for the above given values of amount, rate and years.

We know that

where, p = principal amount ; r = rate of interest ; t = number of years

By substituting the values we get,

Simple interest is $ 107.42 approximately.

Hence, the interest earned on a principle of $671.37 at an interest rate of 4% for four years is $ 107.42.

d≈7.07in

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.