Alicia: 43 miles/hour
Trish: 46 miles/hour
so Alicia drives at a slower rate
All you need to do is plug in some x values and find the correspoding y value
when x=0, y=-3
when x=1, y=9
when x=2, y=21
when x=-1, y=-15
10/24 x 100 = 41.66
Approximately 42% of her day
You just multiply the numerators of the fractions and the denominators of the fractions together, and then reduce the fraction to simplify it from that point on.