IDNLearn.com connects you with experts who provide accurate and reliable answers. Our platform provides detailed and accurate responses from experts, helping you navigate any topic with confidence.

Which of the following facts did you include in your answer?

A. The student did not distribute properly to get [tex]\( A = P + Prt \)[/tex].

B. The equation can be fixed by putting a factor of [tex]\( P \)[/tex] in the denominator: [tex]\( r = \frac{A - P}{Pt} \)[/tex].


Sagot :

To solve for the interest rate [tex]\( r \)[/tex], let's examine the provided information and the corrected equation.

The initial incorrect attempt was:

[tex]\[ A = P + \operatorname{Pr} t \][/tex]

To correct this equation, we need to properly distribute the product and correctly express [tex]\( r \)[/tex]:

[tex]\[ A = P + P \cdot r \cdot t \][/tex]

Rearranging this equation to isolate [tex]\( r \)[/tex]:

[tex]\[ A - P = P \cdot r \cdot t \][/tex]

Now, solve for [tex]\( r \)[/tex] by dividing both sides of the equation by [tex]\( P \cdot t \)[/tex]:

[tex]\[ r = \frac{A - P}{P \cdot t} \][/tex]

Assuming we applied all the given information correctly, upon solving this equation, we find that the interest rate [tex]\( r \)[/tex] evaluates to 2.