Expand your horizons with the diverse and informative answers found on IDNLearn.com. Our community provides accurate and timely answers to help you understand and solve any issue.

Select the correct answer.

Evaluate the following expression when [tex]x = -4[/tex] and [tex]y = 4[/tex].
[tex]\[ \frac{3^8 - 3}{4y} \][/tex]

A. [tex]\(\frac{16,395}{4}\)[/tex]
B. [tex]\(\frac{1,023}{4}\)[/tex]
C. [tex]\(\frac{1,025}{4}\)[/tex]
D. [tex]\(-\frac{1,023}{4}\)[/tex]


Sagot :

Let's evaluate the expression [tex]\(\frac{3^8 - 3}{4 y}\)[/tex] given [tex]\(x = -4\)[/tex] and [tex]\(y = 4\)[/tex].

First, substitute [tex]\(y = 4\)[/tex] into the expression:

[tex]\[ \frac{3^8 - 3}{4 \times 4} \][/tex]

This simplifies to:

[tex]\[ \frac{3^8 - 3}{16} \][/tex]

Now let's focus on evaluating the numerator [tex]\(3^8 - 3\)[/tex]. We know [tex]\(3^8 = 6,561\)[/tex], so:

[tex]\[ 3^8 - 3 = 6,561 - 3 = 6,558 \][/tex]

Substitute this back into the expression:

[tex]\[ \frac{6,558}{16} \][/tex]

When we perform the division [tex]\(6,558 \div 16\)[/tex], the result is:

[tex]\[ 409.875 \][/tex]

Thus, the correct answer matches:

B. [tex]\(\frac{1,023}{4}\)[/tex]

Since [tex]\(409.875 = \frac{1,023}{4}\)[/tex].
Thank you for participating in our discussion. We value every contribution. Keep sharing knowledge and helping others find the answers they need. Let's create a dynamic and informative learning environment together. IDNLearn.com has the answers you need. Thank you for visiting, and we look forward to helping you again soon.