Graph 
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Solve the problem.The receipts, r, at a concert are directly proportional to the number of people attending the concert, c. If the receipts for a concert are $15,000 when 900 people attend, determine how many people attend if the receipts for a concert are $60,000.
A. 360 people B. 36 people C. 36,000 people D. 3600 people
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A.
B. -
C. -
D.
Solve the system by substitution. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x. y = 13 - 3x2x + 9y = -8
A. (-5, -2) B. (5, -2) C. (5, 2) D. (-5, 2)
Solve by graphing.During the month of January 1997, the depth of snow y (in inches) at the base of one ski resort could be approximated by the linear equation where x is the number of days since December 31st. Graph the equation and use the graph to estimate the depth of snow on January 28th.
A. 37 inches B. 9 inches C. 17 inches D. 14 inches