3) A company makes two electronic circuit boards that require the same resistance. The Pro-X board runs on 120 volts, while the Pro-I board runs on 90 volts. If the current
running through the Pro-I board is 15 fewer milliamps (mA) than the current running
through the Pro-X board, how
much current is running through each board?
Which of the following rational equations bests models this situation?
- 1
120
90
- 15
2
120
y = -X+
90
2 + 15
2
120
90
15 - 3
tana 87
.
120
90
"Q + bx + c
2
2 - 15
2
120
90
2 - 15
2