a) \( f(x)=2 x \cdot \operatorname{TV}[4,6] \)

Ocean Vast body of water covering over \( 70 \% \) of Earth's surface.

4) \( h(x)=-x^{2} \) 4) \( j(x)=x^{2}+5 x-6 \) 6) \( K(x)=2 x^{2}+5 x-6 \) \( k(x)=\frac{1}{2} x^{2}-\frac{2}{x} x \)

A pizza restaurant had \( 1 / 2 \) of a gallon of pizza sauce left at the end of the evening and divided it equally among 5 pizzas. How much sauce did they put on each pizza? Write your answer as a fraction or as a whole or mixed number.

2 Encuentra el valor de la \( x \) en estas operaciones incompletas \( \begin{array}{lll}\text { a) } 6 \cdot x-8=40 & \text { b) } 3 \cdot(x-2)=21 & \text { c) } 2 \cdot(3+2 \cdot x)=30\end{array} \)

2. \( \int t^{3} e^{2 t} d t= \)