1. The height h, in centimeters of water going down in a hot tub is given by the equation h(t)= -15t+120 where t is the time in minutes since the plug was pulled. What is the domain and range? Enter your answers in interval notation. [a,b]
2 answers
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Since we don't care of the height before the plug was pulled,
t ≥ 0 <------ your domain
for the range, the initial height, namely h(0), was 120
and since we have a negative value in -15t, the range is
0 ≤ h(t) ≤ 120 <------ range
you change it to interval notation, I am used to "old school" notation.
t ≥ 0 <------ your domain
for the range, the initial height, namely h(0), was 120
and since we have a negative value in -15t, the range is
0 ≤ h(t) ≤ 120 <------ range
you change it to interval notation, I am used to "old school" notation.
1 answer