According to the South Coast Air Quality Management District, the level of nitrogen dioxide, a brown gas that impairs breathing, present in the atmosphere on a certain May day in downtown Los Angeles is approximated by 
, 
, where A(t) is measured in pollutant standard index and t is
measured in hours, with 
corresponding to 7 a.m.
?
Find 
, 
, 
.
?
A. ?
B. ?
C. ?
D. 
E. ?
Answer: D
You might also like to view...
Solve the equation for the specified variable.A = P(1 + nr) for r
A. r = 
B. r = 
C. r = 
D. r = 
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 + 16x + 60 = 0
A. (x + 8)2 + y2 = 4 center (-8, 0), r = 2 B. (x - 8)2 + y2 = 4 center (8, 0), r = 2 C. x2 + (y + 8)2 = 4 center (0, -8), r = 2 D. (x + 8)2 + y2 = 4 center (8, 0), r = 2
Find the y-intercept for the equation y = 7x + 14.
a. 0 b. 1 c. 7 d. 10 e. 14
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree: 3; zeros: -4 and 3 - 2i
A. f(x) = x3 - 2x2 + 5x - 52 B. f(x) = x3 - x2 + 11x + 52 C. f(x) = x3 - 2x2 - 11x + 52 D. f(x) = x3 - x2 - 11x + 52