<u>Answer:</u>

<u>Step-by-step explanation:</u>
We are given the following two points and we are to find the slope of the line which passes through these points:
and 
The formula of the slope is given by:
Slope = 
Substituting the given coordinates in the above formula:
Slope = 
Answer:
298
Step-by-step explanation:
15(10) + 12(7) + 8(7)
Fixed costs:
$350 + $120 + $170 = $640
Variable costs:
x * ( $6.50 + $3.64 ) = x * 10.14
Sales income ( total ):
x * $36.40
FC + FV - Income = 0
640 + 10.14 x - 36.40 x = 0
640 - 26.26 x = 0
26.26 x = 640
x = 640 : 26.26 = 24.37
Answer:
The minimum number of passengers needed per cruise, so that the cruise company can be sure it will make a profit is 25.