Question 142439
A=3*35+.24X (RED LINE)
B=3*41+.16X (GREEN LINE)
3*41+.16X<=3*35+.24X
123+.16X<=105+.24X
.16X-.24X<=105-123
-.08X<=-18
X>=-18/-.08 [DIVIDING BY A MINUS NUMBER CHANGES THE < SIGN TO THE > SIGN]
X>=225 MILES WILL MAKE BOTH RENTALS COST THE SAME.
THEREFORE ANY MILEAGE MORE THAN 225 MILES MAKES PLAN B A BETTER BUY.
{{{ graph( 300, 300, -36, 280, -10, 200, .24x +105, .16x +123) }}} (graph 300x300 pixels, x from -36 to 280, y from -10 to 200, of TWO functions .24x +105 and .16x +105).