Function f is defined by the equation f(x) = 3x-7.
1 answer:
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For this case we propose a system of equations:
a: Let the variable representing the cost of hardcover books
b: Let the variable representing the cost of paperback books
According to the statement data we have:
Substituting the second equation into the first we have:
Thus, the cost of hardcover books is $12
ANswer:
The cost of hardcover books is $12
For this case we have that by definition, the volume of a sphere is given by:
Where:
r: It is the radius of the sphere
According to the statement we have to:
So the volume is:
Rounding we have that the volume of the sphere is:
Answer:
Option B