Lily A.

John runs at different speeds as part of his training
program. The graph shows his target heart rate at
different times during his workout. On which
interval is the target heart rate strictly increasing then
strictly decreasing?
A) Between 0 and 30 minutes
B) Between 40 and 60 minutes
C) Between 50 and 65 minutes
D) Between 70 and 90 minutes

$$\begin{array}{c}{x+y=0} \\ {3 x-2 y=10}\end{array}$$
Which of the following ordered pairs $(x, y)$ satisfies
the system of equations above?
$$\begin{array}{l}{\text { A) }(3,-2)} \\ {\text { B) }(2,-2)} \\ {\text { C) }(-2,2)} \\ {\text { D) }(-2,-2)}\end{array}$$

If $\frac{x-1}{3}=k$ and $k=3,$ what is the value of $x ?$
A) 2
B) 4
C) 9
D) 10

A landscaping company estimates the price of a job,
in dollars, using the expression $60+12 n h,$ where $n$
is the number of landscapers who will be working and $h$ is the total number of hours the job will take
using $n$ landscapers. Which of the following is the
best interpretation of the number 12 in the
expression?
$\begin{array}{l}{\text { A) The company charges } \$ 12 \text { per hour for each }} \\ {\text { landscaper. }} \\ {\text { B) A minimum of } 12 \text { landscapers will work on }} \\ {\text { each job. }}\end{array}$
$\begin{array}{l}{\text { C) The price of every job increases by }} \\ {\$ 12 \text { every hour. }} \\ {\text { D) Each landscaper works } 12 \text { hours a day. }}\end{array}$

For $i=\sqrt{-1},$ what is the sum $(7+3 i)+(-8+9 i) ?$
A) $-1+12 i$
B) $-1-6 i$
C) $15+12 i$
D) $15-6 i$

$$9 a^{4}+12 a^{2} b^{2}+4 b^{4}$$
Which of the following is equivalent to the expression shown above?
\begin{equation}
\begin{array}{l}{\text { A) }\left(3 a^{2}+2 b^{2}\right)^{2}} \\ {\text { B) }(3 a+2 b)^{4}} \\ {\text { C) }\left(9 a^{2}+4 b^{2}\right)^{2}} \\ {\text { D) }(9 a+4 b)^{4}}\end{array}
\end{equation}