Answer:
120
Step-by-step explanation:
US stamps = 5/8 × 480
= 300
foreign stamps = 480- 300
= 180
more US stamps than foreign stamps = 300-180
= 120
- 15x² + 7x + 1
Given
2x² - 9 - 17x² + 10 + 7x ← collect like terms
= (2x² - 17x² ) + 7x + 1
= - 15x² + 7x + 1
