# SAT Math Multiple Choice Practice Question 57: Answer and Explanation

### Next steps

- Use your browser's back button to return to your test results.
- Do another SAT math multiple choice practice tests.

**Question: 57**

**13.**

The number of solutions to f(x) = 0 is

A. 0

B. 1

C. 2

D. 3

E. It cannot be determined from the graph alone.

**Correct Answer:** D

**Explanation:**

D. When f(x) = 0, the graph has a height of 0; in other words, it crosses the x-axis. As you can see from the graph, it crosses the x-axis in three places. Notice that you don't actually need to know where it crosses the x-axis. You just need to count the number of times it does so.