5x - 3 = 7
<em><u>Add 3 to both sides.</u></em>
5x = 10
<em><u>Divide both sides by 5.</u></em>
x = 2
The value of x is 2.
(70 -100)/15 = -2 . . . . the z-score of a score of 70
p(z < -2) ≈ 2.3%
A score of 70 would place you in approximately the 2nd percentile.
An equation is formed of two equal expressions. The value of x in the given exponential equation is 10. The correct option is 10.
<h3>What is an equation?</h3>
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
In the given exponential equation
, It can be observed that the base of both the sides of the equation is the same, therefore, 5. Therefore, the equation can be written as,

Since the base on both the sides are the same, comparing the exponential values on both sides,
x - 2 = 8
x = 8 + 2
x = 10
Hence, the value of x in the given exponential equation is 10.
Learn more about Equation here:
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