394
RCMultiple Choice

Unit Summary — Cumulative exam

Question 394 • Career Explorations - EL3401

What are the x-intercepts of the graph of the function f(x) = x2 + 5x − 36?

Answer
(
(−4, 0) and (9, 0)
(
(4, 0) and (−9, 0)
(
(−3, 0) and (12, 0)
(
(3, 0) and (−12, 0)

Explanation

The x-intercepts occur where f(x) = 0. Factor x² + 5x − 36 as (x + 9)(x − 4) = 0, so x = −9 or x = 4. Therefore, the x-intercepts are (−9, 0) and (4, 0), which is choice B.

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