Answer:
B
y = 3 cos (pi/12x - pi/4) + 17
Step-by-step explanation:
First find the average temperature which is 20 + 14/2 = 17
Find the amplitude
20 - 17 = 3
This means that that at noon, the shift is 3hrs past
the best equation that represents this scenario is
Convert all to decimals
percent means parts out of 100
13%=13/100=0.13
'of' means mutiply
Tom=13% of 4
tom=0.13 times 4
tom=0.52 lb
Lisa=0.6 lb
Jane=0.12 of 4
jane=0.12 times 2
jane=0.48
Tom=0.52
Lisa=0.60
Jane=0.48
Lisa used the most
6 cds total was 85.75 and there was a 5.04 tax so take 85.75 - 5.04 = 80.70
80.70÷6= 13.45