Answer: A cross section is the shape we get when cutting straight through an object.
Step-by-step explanation:
Equation:
9+3x=30
Answer:
9+3x=30
Subtract 9 from each side.
3x=21
divide by 3 on each side.
x=7
Each shirt cost $7.
Not enough detail sorry can't help
Answer:
If (14,20) is an option that would be your answer.
Answer:
The function is 
domain is 0 to 0.2 hour.
range is 0 to 2 miles.
Step-by-step explanation:
Given that,
Average velocity = 10 miles/hour
Time = 12 min = 0.2 hour
We need to write a function that models the student's distance from home
Using formula of distance

Where, v = velocity
t = time
d = distance
Put the value into the formula

This is a function.
We know that,
Domain :
Domain shows the time.
So, domain = 0 to 0.2 hour
Range :
Range shows the distance.
The range at t =0,
Put the value of t in the function

The range at t =0.2 hour


So. range = 0 to 2 miles
Hence, The function is 
domain is 0 to 0.2 hour
range is 0 to 2 miles