I'm guessing it 30 it says 3 times the nber of trumpet players
Answer: $70 per year.
Step-by-step explanation:
Let's say that x is the number of years that has passed and y is how much the stamp is worth.
So we know that in zero years the stamp was worth $420 because that is the time Sheri gave her brother Sam the stamp. That could bring up the coordinates (0,420) .
Now we know that in 8 years it was worth $980 and that could be the coordinates (8,980)
To find the rate of change we need to find the different between the y value and divide it by the difference in the x values.
420 - 980 = -560
0-8 = -8
-560/-8 = 70
The rate of change is 70 which means that it grew by $70 every year.
4cm, as if two of the sides add up to be the same length as the first side then the triangle would be a straight line.
Answer : 
Explanation:
shifting 1 to Right hand side becomes -1
shifting 6 on right hand side will divide -1 becomes -1/6
Quadratic equation is the equation having degree 2 and inequality which is not equal to right hand side
