SAT Math: Advanced Math

Which expression is equivalent to $(m^{4}q^{4}z^{-1})(mq^{5}z^{3})$, where $m$, $q$, and $z$ are positive?

The first term of a sequence is $9$. Each term after the first is $4$ times the preceding term. If $w$ represents the $n$th term of the sequence, which equation gives $w$ in terms of $n$?

The function $f$ is defined by $f(x) = 4 + \sqrt{x}$. What is the value of $f(144)$?

Which of the following could be the equation of the graph shown in the *xy*-plane?

Which expression is equivalent to $20w-(4w+3w)$?

A rectangle has a length of $x$ units and a width of $(x-15)$ units. If the rectangle has an area of $76$ square units, what is the value of $x$?