Solve the problem.Jon has 1243 points in his math class. He must have 90% of the 1500 points possible by the end of the term to receive credit for the class. How many additional points he must earn by the end of the term to receive credit for the class?
A. exactly 1119 points
B. at least 1350 points
C. at least 107 points
D. at most 257 points
Answer: C
Mathematics
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Find the inverse of the function.f(x) = 
for x ? 5
A. f-1(x) = x + 5 B. f-1(x) = x2 - 5 C. f-1(x) = x2 + 5 D. Not invertible
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Use logarithmic differentiation to find the derivative of y.y = cos x
A. cos x
B. cos x
C. 
D. cos x
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Solve the problem.A computer is purchased for $4100. Its value each year is about 75% of the value the preceding year. Its value, in dollars, after t years is given by the exponential function 
Find the value of the computer after 2 years.
A. $2306.25 B. $1297.27 C. $6150.00 D. $1729.69
Mathematics
Solve the problem.Simplify: -2.9x + 5.8 - (5x + 0.3) + 5.8x
A. 7.9x + 6.1 B. -2.1x + 5.5 C. -2.1x + 6.1 D. 7.9x + 5.5
Mathematics