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What is the least integer value in the solution set to [tex]\log _3(8x - 37) \ \textgreater \ 5[/tex]?

A. 34
B. 35
C. 36
D. 37


Sagot :

To determine the least integer value of [tex]\( x \)[/tex] that satisfies the inequality [tex]\( \log_3(8x - 37) > 5 \)[/tex], we need to solve the inequality step-by-step.

1. Begin by rewriting the logarithmic inequality in exponential form. Recall that if [tex]\( \log_b(a) = c \)[/tex], then [tex]\( a = b^c \)[/tex]. Thus, the inequality [tex]\( \log_3(8x - 37) > 5 \)[/tex] can be converted as follows:
[tex]\[ 8x - 37 > 3^5 \][/tex]

2. Calculate [tex]\( 3^5 \)[/tex]:
[tex]\[ 3^5 = 243 \][/tex]

3. Substitute [tex]\( 243 \)[/tex] back into the inequality:
[tex]\[ 8x - 37 > 243 \][/tex]

4. Add 37 to both sides of the inequality to isolate the term involving [tex]\( x \)[/tex]:
[tex]\[ 8x > 243 + 37 \][/tex]

5. Simplify the expression on the right-hand side:
[tex]\[ 8x > 280 \][/tex]

6. Divide both sides of the inequality by 8 to solve for [tex]\( x \)[/tex]:
[tex]\[ x > \frac{280}{8} \][/tex]

7. Simplify the fraction:
[tex]\[ x > 35 \][/tex]

The inequality [tex]\( x > 35 \)[/tex] tells us that [tex]\( x \)[/tex] must be greater than 35. The smallest integer greater than 35 is 36.

Therefore, the least integer value for which the inequality [tex]\( \log_3(8x - 37) > 5 \)[/tex] holds true is:
[tex]\[ \boxed{36} \][/tex]