Question
If f(x) = 3x + a and f(1) = 7, find a and f(4).
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$\lim _{z \rightarrow a}\left[\frac{(z+2)^{\frac{3}{2}}-(a+2)^{\frac{3}{2}}}{z-a}\right]$
If $\lim _{x \rightarrow 5}\left[\frac{x^k-5^k}{x-5}\right]=500$, find all possible values of $\mathrm{k}$.
$\lim _{x \rightarrow 0}\left[\frac{a^{3 x}-a^{2 x}-a^x+1}{x^2}\right]$