Question

the function f(x) = \frac{6.5x^{2}-63.8x + 2102}{x^{2}+324} models the ph level, f(x), of a mouth x minutes after eating food containing sugar. the graph of this function is shown to the right. complete parts (a) through (e).
a. use the graph to obtain a reasonable estimate, to the nearest tenth, of the ph level of the human mouth 30 minutes after a person eats food containing sugar. the ph level after 30 minutes is (round to the nearest tenth as needed.)

Explanation:

Step1: Locate x - value on graph

Locate x = 30 on x - axis.

Step2: Find corresponding y - value

Find the y - value on the curve at x = 30. By observing the graph, when x = 30, the y - value (pH level) is approximately 5.2.

Answer:

5.2