Answer:
b)21
Step-by-step explanation:
f(-6) = 9 - 2 × (-6) = 9+12=21
The speed of the faster cyclist will be 30 miles/hour.
<em><u>Explanation</u></em>
One cyclist is 3 times as fast as the other.
Lets assume that the speed of the slower cyclist is
miles/hour.
So, the <u>speed of the faster cyclist</u> will be:
miles/hour.
They start riding toward each other at the same time and meet 2 hours later.
We know that, 
So, the <u>distance traveled by slower cyclist</u> in 2 hours
miles and the <u>distance traveled by faster cyclist</u>
miles.
Given that, they were 80 miles apart at the starting. So, the equation will be.....

So, the speed of the faster cyclist will be: (3×10)= 30 miles/hour.
It’s c i know bc i had the question
Triangle for the sides and the for the bottom of the shape, square
Answer:
Can't answer
Step-by-step explanation:
I need more information to help you...
Could you please add a pic or screenshot for me to help?