The equation which shows the true solution to the given logarithmic equation is,

<h3>What is power rule of logarithmic function?</h3>
The power of the log rule says that the number written in the front of the logarithmic function can be raised to the power of the logarithmic function.
For example,

Given information-
The logarithmic equation given in the problem is,

Using the power rule of the logarithmic function,

Using the exponent rule of the logarithmic function the above equation can be written as,

Solve it further,

Hence, the equation which shows the true solution to the given logarithmic equation is,

Learn more about the rules of logarithmic function here;
brainly.com/question/13473114
The graph that best represent the relationship between time and cost is option A as it is a proportional graph
<h3>How to know the graph that represent the relationship between time and number of team?</h3>
Each week 6 teams register to participate.
Therefore, for every week 6 team register to participate in the competition.
This simply implies as time increases , the number of participant in the competition also increase.
Therefore, the equation that can be use to represent this situation is as follows:
y = 6x
where
- y = number of team registered
- x = time in weeks.
Hence, the graph that best represent the relationship between time and cost is option A as it is a proportional graph. The registered team increases as the time in weeks increase.
learn more on graph relationship here: brainly.com/question/12812258
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9x - 21 = -42
This should be the type of equation that you're looking 4
Answer:
21
Step-by-step explanation:
cross multiply
42 x 24 = 48x
1008 = 48x
x = 21