Answer:
3906 dollars will be the decrease
the next model will cost 27094 dollars
Step-by-step explanation:
12.6%÷100×3=3906
31000-3906=27094
For ease of solving, let's first find the rate of Mia and Luke per minute. Since Mia can do 4 pieces every 3 minutes, then she can do

of a piece per minute. Luke on the other hand can do

of a piece per minute.
To find how many pieces they made, we first need to find the time it took for them to make the pieces. We assign

as the time Mia spent making origami. Since Luke spent 5 more minutes, we can denote his time as

.
Putting this into an equation we'll get:




Therefore, Mia made pieces of origami for 39 minutes. Knowing this, we can find out the number of pieces of origami she made:
ANSWER: Mia made 52 pieces of origami.
Answer:
For 100 calls the monthly cost = 10.95 + 0.95(100) = $ 22.95
120 calls = 10.95 + 0.95(120) = $ 25.35
140 calls = 10.95 + 0.95(140) = $ 27.75
160 calls = 10.95 + 0.95(160) = $ 30.15
Therefore it is constant
The answer is B. Yes, the average rate of change is constant
Hope this helps!