If the addition or subtraction of two linear equations gives the results:
?
?, ?     
?
then the graphs of those equations will have a relationship to each other that can be described as follows.
?

A. intersecting
B. parallel
C. equal
D. none of the above


Answer: B

Mathematics

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The following table shows the number N, in thousands, of newspaper subscriptions t years after initial publication. Use exponential regression to find the yearly percentage growth in the number of subscriptions. Round your answer to two decimal places.  t 0 3 6 9 12 N 2.89 6.88 16.82 40.64 99.00?

A. 32.91% B. 34.00% C. 35.39% D. 35.21%

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Rationalize the denominator. Assume all variables represent positive real numbers.

A. 4 - 12
B. 4 + 12
C. 4 - 3
D.

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Use grouping to factor the polynomial.z4 - 5z3 - 7z2 + 35z

A. z(z2 - 7)(z - 5) B. z(z2 - 5)(z - 7) C. (z3 - 7)(z + 5) D. z(z2 + 7)(z - 5)

Mathematics

Find a formula for the inverse of the function described below.An organization determines that the cost per person of chartering a bus is given by the formula where x is the number of people in the group and C(x) is in dollars.

A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 

Mathematics