\begin{tabular}{l} Cell Phone Plan - Application \\ \hline When purchasing a new Cell Phone Plan you are given two pay options (Both included \\ unlimited text): \\ With Plan A, you can pay 39 cents per minute. This can be represented by the equation \\ \( c=0.39 m \) \\ With Plan B, you can pay 11 cents per minute plus a flat fee of \( \$ 7.50 \). This can be \\ represented by the equation \( c=0.11 m+7.50 \) \\ Complete the following steps to determine how many minutes you would need to use for \\ Plan B to be less expensive than Plan A \\ \hline Write an inequality that represents Plan B < Plan A \\ Inequality: \\ \hline\end{tabular}

5.7 Determine the equation of \( h \) if \( h(x)=g(x+1)-2 \)

In the \( x y \)-plane, a parabola has vertex \( (9,-14) \) and intersects the \( x \)-axis at two points. If the equation of the parabola is written in the form \( y=a x^{2}+b x+c \) where \( a, b \), and \( c \) are constants, which of the following could be the value of \( a+b+c \) ? (A) -23 (B) -19 (D) -12

Roger was told to think of a number, add 20 , then divide the result by 3 . The answer was Jower than Roger's original number. Deteruine the range of possible numbers Roger may have originally chosen.

1) \( \frac{10 x+8}{3 a-b}-\frac{9 x+5}{3 a-b}= \)

Diketahui sistem persamaan tinier berikut ini : \[ \begin{array}{l}-1 x+y+2 z=2 \\ 3 x-1 y+z=6 \\ -1 x+3 y+4 z=4\end{array} \] Tentukan solusi persamaan linear tersebut menggunakan metode gauss!