Solve by using elimination. Express your answer as an ordered pair. 3x - 2y = 21
-4x - 5y = -5
(5, −3)
(−4, 3)
(4, –3)
(−25, −46)

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?