Which of the following best describes a non-convex polygon? All of its interior angles are less than \( 180^{\circ} \). All of its sides are equal in length. It has no diagonals inside the polygon. It has at least one angle greater than \( 180^{\circ} \).

Soumik has \( \$ 5 \) less than Kofi. If they have \( \$ 97.50 \) altogether, how much does each person have?

Solve the equation. Check your solutions. \[ x^{4}-13 x^{2}+36=0 \]

QUESTION ONE a. The point \( A \) has coordinates \( (p, 1) \) and the point \( B \) has coordinates \( (9,3 p+1) \) Where \( p \) is a constant. \( i \). For the case where the distance \( A B \) is 13 units, find the possible values of \( p \)

A sprinter runs around a 400 m running track twice (distance \( =800 \mathrm{~m} \) ). They start in lane 1 and finish in lane 1 (start and finish in the same position). They complete the run in 2 min 20 sec . Calculate their average velocity (not speed!) and include the unit \( (\mathrm{m} / \mathrm{s}) \) ?

\( 2.1 .1 \frac { 2 ^ { n + 2 } \cdot 4 ^ { n + 1 } } { 8 ^ { n - 1 } } \)