The expanded form for 32.043 is 30+2+0.04+0.003 because in expanded form, you have to add each place value.
The slope formula is y2-y1/x2-x1, so you plug in you numbers to get -3-6/5+1. This simplified to -9/6, or -3/2
Letter C represents a flat rate of $20 + .06x per each minute.
