The graphing calculator screens show a system and the point of intersection. Choose the screen which best represents the given system.y = 2x - 9y = -2x + 3
A. 
B. 
C. 
D. 
Answer: D
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Use scientific notation to solve the problem.The national debt of a small country is $6,440,000,000 and the population is 2,794,000. What is the amount of debt per person?
A. $2.30 × 106 B. $2.30 × 103 C. $23.00 D. $2.30
Rewrite the equation in terms of base e. Express the answer in terms of a natural logarithm, and then round to three decimal places.y = 2(7)x
A. y = 2e7x, y = 22.7181.946x B. y = (ln 2)ex ln 7, y = 0.693e1.946x C. y = 7ex ln 2, y = 7e0.693x D. y = 2ex ln 7, y = 2e1.946x
Find the domain of the composite function (f ? g)(x). Write the domain in interval notation.f(x) = 
, g(x) = 
A. (-?, 0) ? (0, ?)
B. (-?, 0) ? (0, 6) ? (6, ?)
C. 
? 
D. (-?, 0) ? 
? 
Solve the problem.The logistic growth function f(t) = 
models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a particular community. How many people became ill with this infection when the epidemic began?
A. 920 people B. 919 people C. 46,000 people D. 50 people