Answer:
38 hours
Step-by-step explanation:
Last week = y hours which is increased by 50% to give 57 hours this week.
y x 1.5 = 57
y = 57 divided by 1.5 = 38
domain is all real numbers
y-intercept is -19
47.1
c=πd
c=3.14*15
c=47.1