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    Set Mean and Member

    The set $ \{5, 8, 10, 18, 19, 28, 30, x\} $ has eight members. The mean of the set's members is 4.5 less than $ x $. What is the value of $ x $ ?

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    • $\frac{a}{b}$
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    • 0
    • =
    • %
    • $a^n$
    • $a^{\circ}$
    • $a_n$
    • $\sqrt{}$
    • $\sqrt[n]{}$
    • $\pi$
    • $\ln{}$
    • $\log$
    • $\theta$
    • $\sin{}$
    • $\cos{}$
    • $\tan{}$
    • $($
    • $)$
    • $[$
    • $]$
    • $\cap$
    • $\cup$
    • $,$
    • $\infty$

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