Answer: 31
How: If there are two negative signs like this, you would connect them together and make it into a addition sign where you then can add them.
<span>The total number of students in the class is 9 + 7 = 16
The probability first person is a girl is 9/16
The probability second person is a girl is 8/15
The probability third person is a girl is 7/14
The probability that three girls are the first to enter is 9/16 * 8/15 * 7/14 = 504/3360 = 0.15. Option A.</span>
Answer:

Step-by-step explanation:
<u>Average Cost</u>
Making a certain new product costs $300 plus $18 per product.
The total cost for x products is given by:
300 + 18x
To get the average cost, we divide the total cost by the number of products manufactured:

If the manufacturer wants to keep the average cost at $24 or less:

This is the required inequality
Answer:
see below
Step-by-step explanation:
A cubic with a positive leading coefficient will have a general trend of upward to the right. (If the leading coefficient is negative, it will trend downward.) If there is only one real zero, it will cross the x-axis exactly once. There may or may not be two turning points, but there won't be any more than that. (There may be no turning points.)
The attached graph shows a couple of examples. The turning points and inflection points may be on either side of the x-axis.