Solve the problem.The rate at which an assembly line worker's efficiency E (expressed as a percent) changes with respect to time t is given by 
where t is the number of hours since the worker's shift began. Assuming that 
find E(t).
A. E(t) = 50t - 4t2 + 40
B. E(t) = 50t - 2t2 + 88
C. E(t) = 50t - 2t2 + 136
D. E(t) = 50t - 2t2 + 40
Answer: D
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Use Newton's method to estimate the requested solution of the equation. Start with given value of x0 and then give x2 as the estimated solution.x4 - 4x + 2 = 0; x0 = 0; Find the left-hand solution.
A. 0.57 B. 0.52 C. 0.51 D. 0.5
Which subtraction model (take-away, missing addend, comparison, or measurement) corresponds best to the problem?Jane has $2 in her wallet. If she spends $2 on a book, how much money will she have left?
A. Comparison B. Measurement C. Take-away D. Missing addend
Find the quadratic function whose graph contains the given points.
, 
, 
A. f(x) = 4x2 - 3x - 4 B. f(x) = -4x2 - 3x + 4 C. f(x) = -4x2 - 3x - 4 D. f(x) = -4x2 + 3x - 4
Find f(x) and g(x) such that h(x) = (f ? g)(x). Answers may vary.h(x) = 
A. f(x) = 
, g(x) = 7x + 2
B. f(x) = 
, g(x) = x + 2
C. f(x) = 7x, g(x) = 
D. f(x) = 7x + 2, g(x) = 