Question 1163491
 An epidemic is spreading through a large western state. Health officials estimate that the number of persons who will be afflicted by the disease is a function of time since the disease was first detected. The function is
n=f(t)= 200 t3 - 20 t2
Where n equals the number of persons and 0< t < 60 measured in days
i) How many persons are expected to have caught the disease after 10 days? After 30 days?
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Use ^ (Shift 6) for exponents
Don't put spaces between, eg, 200 t^3
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n=f(t)= 200t^3 - 20t^2
How many persons are expected to have caught the disease after 10 days?
Sub 10 for t:
n = 200*10^3 - 20*10^2 = 200000 - 2000 = 198000
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After 30 days?
Sub 30 for t.
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You may edit the question. Maybe convert formulae to the same formula notation {{{x^2-1}}} as in your solutions.