Question

20. Matt is selling chocolate bars to make some extra money. In the first week of selling, he sold 2x2 + 3x − 1 chocolate bars. In the second week of selling, he sold 3x2 − 2x + 3 chocolate bars. If x = 2, how many chocolate bars did he sell in total over the two weeks?

Answer 1

Answer: 24

Explanation:

Chocolate bars sold in first week:

= 2x² + 3x − 1

where x = 2

= 2x² + 3x − 1

= 2(2)² + 3(2) − 1

= (2×4) + 6 - 1

= 8 + 6 - 1

= 13

Second week

= 3x² - 2x + 3

= 3x² - 2x + 3

= 3(2)² - 2(2) + 3

= 12 - 4 + 3

= 11

Total chocolate sold = 13 + 11 = 24