Answer: 1.) x - 2y = 4 , add 2y to both sides. ---> answer is, X = 2y + 4
2.) 2x - 6y = 8, Add 6y to both sides, then divide both sides by 2. --> answer is, X = 3y + 4
Answer:
C = 250S + 4500
17 tons = $8750
simply plug in 17 into the variable S and solve for C to find the total cost
<span>2(7/9)-(1/4) = 47/36 = 1 11/36</span>