I REALLY NEED HELP WITH THIS!! Please

1. Calculate the acceleration of thus object from t=4~9 seconds

A. 19m/s^2
B. 6m/s^2
C. 3m/s^2
D. 0m/s^2

2. What is the objects acceleration at t=10 seconds?

A. 0m/s^2
B. 6m/s^2
C. -6m/s^2
D. Impossible to calculate

3. When did this object changed directions?

A. It did not change direction
B. At t= 6 seconds
C. At t= 11 seconds and At t= 14 seconds
D. At t= 4 seconds

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steve should create a type of business report called a business plan. the correct option among the options that are already given in the question is the last or the fourth option. this business report created by steve will actually influence the investors about investing their money in steve's business. this business report will have all the details about the business, the amount of investment required and the amount of expected profit.

47

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.