The answer is D. <span>No, it is not a valid inference because his classmates do not make up a random sample of the students in the school.</span>
The team go skirt pop pop pop pop pop pop...
Y = -0.5x - 1
Slope = Y2-Y1/X2-X1
Slope = -1.5-(-1)/1-0 = -0.5
Y-in. = X = 0
Y-in. = -1
This is the concept of functions. We are required to calculate for the total cost of tickets if 27, 39 and 43 people attended a concert whose cost was represented by C=10n+26.
To solve for this we substitute the each values in the function as follows;
When n=27
C(27)=10*27+26=296
When n=39
C(39)=10*39+26=416
When n=43
C(43)=10*43+26
=456
0.433 is already rounded to the hundredths so to round it to the nearest tenths, remove the last number.
Your answer is 0.43
