What kind of triangle is 3,8,9

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Complete the table for different values of x in the polynomial expression -7x2 + 32x + 240. then, determine the optimal price that the taco truck should sell its tacos for. assume whole dollar amounts for the tacos.