For a person at rest, the velocity v (in liters per second) of airflow during a respiratory cycle (the time from the beginning of one breath to the beginning of the next) is given by
What will be an ideal response?
where t is the time (in seconds).
(Inhalation occurs when v > 0 and exhalation occurs when v < 0.)
Select the graph of this velocity function.
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Simplify the algebraic expression by combining similar terms.3.8x - 7.2y - 6.5x + 14.1y
A. -2.7x + 6.5y B. -2.7x + 7.2y C. -2.8x + 6.9y D. -2.9x + 6.9y E. -2.7x + 6.9y
Write the number in scientific notation.0.00207
A. 2.07 × 10-4 B. -2.07 × 103 C. 2.07 × 10-3 D. 2.07 × 10-2
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. No x-intercepts, y-intercept: 
;
B. No x-intercepts, y-intercept: 
;
C. No x-intercepts, y-intercept: 
;
D. No x-intercepts, y-intercept: 
;
Graph the line. Also, give the x-intercept (if any), y-intercept (if any), and slope of the line (if defined).f(x) = 
x + 2
A. x-intercept: (-4, 0); y-intercept: (0, 2);
slope: 
B. x-intercept: (4, 0); y-intercept: (0, -2);
slope: 
C. x-intercept: (4, 0); y-intercept: (0, 2);
slope: - 
D. x-intercept: (-4, 0); y-intercept: (0, -2);
slope: - 
