Answer:

149 engines in 9th year
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
Please have a look at the attached photo.
My answer:
From a look at the photo and the data plot can be represented by the function, so we can pick 2 points in our given graph
- (x1, y1) = (2,60)
- (x2, y2) = (5,99)
The standard form of a linear equation is:
y = mx + b where:
- m is the slope
- b is the y-intercept
We know the slope of the function can be found as following:
so in this situation we have:
<=> 
=> y = 13x + b (1)
Because the line goes through point (2,60) so we substitute it into (1):
60 = 13*2 + b
<=> b = 60 - 26 = 34
=> y = 13x + 34
Now we will substitute x=9 to find the engines produced by company in 9th year as:

Hence, the company will produce 149 engines in 9th year
The answer for 2ab(xa^9+ya^3-6) is 2a^10bx + 2a^4by-6ab.
What is the mathematical expansion?
A mathematical expansion can be described as the finite combination of symbols which can be seen as one having rules which is usually based on the context that is been used.
The solution for the question is 2a^10bx + 2a^4by-6ab
Therefore, the expansion of 2ab(xa^9+ya^3-6) is 2a^10bx + 2a^4by-6ab.
Learn more about expansion at:
brainly.com/question/723406
25 minutes (0:25) added to 7:15.
7:15 + 0:25 = 7:40
Also expressible as 15+25
He arrived at 7:40AM.
Answer:324
Step-by-step explanation: