c.
The number of students is represented with S, to show 2 times that number it is shown as 2S, a less than is word problem jargon for minus. So it is 2S-21.
The one day pass is less expensive
Answer:
16mm
Step-by-step explanation:
Just do 40 * 2/5 = 80/5 = 16mm
Is D the answer I think am not that sure I try my best
Answer:
3( n +
)² -
= 0
Step-by-step explanation:
3n² = 6 - 17n ⇔ 3n² + 17n - 6 = 0
3( n² + 2 ×
n + (
)² - (
)² - 2 ) = 0
3( n +
)² - 3 ×
- 6 = 0
3( n +
)² -
= 0