Solve.On a particular day, the amount of pollution A in the air outside a home located near a factory can be modeled by the expression 
, where t is the number of hours after 12 P.M.(i) Graph the equation 
.(ii) At what time of day was the pollution highest?(iii) What was the highest amount of pollution in the air during the day?(iv) In a sentence, describe the trend in pollution that you observe from the graph.
What will be an ideal response?
(i)
(ii) Pollution was highest at 4 P.M.
(iii) The higest amount of pollution was 256 ppm.
(iv) The amount of pollution increases between 12 P.M. and 4 P.M. and then decreases after that.
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Solve the initial value problem.
= 
csc t cot t, v
= 
A. v = csc t + 
B. v = - 
+ 3
C. v = - 
+ 
D. v = - 
+ 2
Provide an appropriate response.Convert 6 gallons to pints using unit ratios.
A. 36 pints B. 24 pints C. 48 pints D. 12 pints E. none of the above
Use the compound interest formulas A = P
nt and 
to solve.Find the accumulated value of an investment of $11,000 at 6% compounded semiannually for 7 years.
A. $16,638.49 B. $15,620.00 C. $13,528.61 D. $16,539.93
Find an equation for the line that passes through the given point and satisfies the given conditions.P = (9, 7); parallel to v = 2i + 5j
A. 2x + 5y = 53
B. 5x - 2y = 31
C. 2x + 5y = 29
D. y - 7 = 
(x - 2)