# Lesson 11 So, You Say There’s a Chance? Practice Understanding

### 1.

Solve this equation by factoring.

### 2.

Solve for

This is the formula for acceleration.

### 3.

Multiply.

Write your answer as a base of

### 4.

Solve.

### 5.

Explain why the quadratic equation in problem 4 had

### 6.

Given:

If

### 7.

Subtract.

A local newspaper releases results of a poll of residents to see what proportion approve of the job the city mayor is doing. The article reports that

### 8.

Can you conclude that

### 9.

Identify the margin of error for this poll, then interpret the meaning of the margin of error.

A company of several thousand employees is interested in the average wage it is paying. After sampling

### 10.

Find the margin of error, then interpret the meaning of the margin of error.

### 11.

The CEO of the company is wondering how competitive its wages are with a competing company. He finds a report online that says a sample of

Predict the number and potential type of solutions for each function. Justify your answer.

### 12.

### 13.

### 14.

The graph of