Quiz 13, 4.1-4.15

Question 1

Simplify 3x + 4x

Answer 1

7x

Question 2

3x + 4x

Write the number of terms in a binomial

Answer 2

2

Question 3

Write the numerical coefficient of 3x²

Answer 3

3

Question 4

Write mmnn using exponents

Answer 4

m²n²

Question 5

3x = 5 + 7

Answer 5

3x = 12

x = 4

Question 6

x/3 = 7

Answer 6

3 * x/3 = 7 * 3

x = 21

Question 7

5x = 120

Answer 7

5x/5 = 120/5

x = 24

Question 8

4x - 6 = 2x + 4

Answer 8

4x - 2x - 6 = 2x - 2x + 4

2x - 6 + 6 = 4 + 6

2x = 10

x = 5

Question 9

3x² if x = 6

Answer 9

3 ( 6²)

3(36)

108

Question 10

3y² + 2y if y = 3

Answer 10

3(3²) + 2(3)

3(9) + 6

27 + 6

33