Use the quadratic function \( f(x)=-3 x^{2}+7 x+8 \) to answer the following questions. a) Use the vertex formula to determine the vertex. The vertex is \( \square \). (Type an ordered pair. Simplify your answer.) b) Does the graph "open up" or "open down"? Un

a \( \quad 2^{3} \cdot 2^{-4} \)

question 4. Solve \( 3 x+2=2+4 x \)

which of the following equations is not a linear function? 1) \( 2 y-3 x=1 \) 2) \( 4 x^{2}+y^{2}=4 x y \) 3) \( y=2 \) 4) \( x=2 \)

Add \( 5 \mathrm{a}-3 \mathrm{~b} \) and \( -5 \mathrm{~b}+3 \mathrm{a} \) the result is ...... \[ \begin{array}{l}8 \mathrm{a}-8 \mathrm{~b} \\ 8 \mathrm{a}+8 \mathrm{~b} \\ 8 \mathrm{~b}-8 \mathrm{a} \\ 2 \mathrm{a}-2 \mathrm{~b}\end{array} \]

\( \equiv \) (i) Listen A bowl contains blueberries and strawberries. There are a total of 12 berries in the bowl. The ratio of blueberries to strawberries is 1 to 2 . How many of each berry are in the bowl? \( \square \) blueberries strawberries