Answer: −
-4x^2-5x+10
Step-by-step explanation:
Answer:

Step-by-step explanation:
4 = Red
3 = Blue
2 = White
1 = Yellow
What is probability that it is not yellow ?

Because only 1 marble is yellow and they are 9 other colours apart from yellow it must be 
Given:
Hayden
minutes to complete each level of his video game.
He plays for
minutes.
To find:
The number of levels he will complete.
Solution:
We have,
Required time for each level = 
Total time = 
The number of level is




On further simplification, we get



Number of levels must be a whole number. So, approx to value to the preceding whole number.

Therefore, Hayden will complete 6 levels if he plays for
minutes.
21
Step-by-step explanation:
because
7b
=7 × b
=7 × 3(b=3)
=21