Determine whether the equation defines y as a function of x. x2 + 2y2 = 1
A. function
B. not a function
Answer: B
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Solve the problem.A rectangular box with volume 327 cubic feet is built with a square base and top. The cost is $1.50 per square foot for the top and the bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base. Express the cost the box as a function of x.
A. C(x) = 4x + 
B. C(x) = 3x2 + 
C. C(x) = 3x2 + 
D. C(x) = 2x2 + 
?Find the general solution of the first-order linear differential equation.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Solve the problem.A loan of $8000 is made at 5% interest, compounded annually. After t years, the amount due, A, is given by the function A(t) = 8000(1.05)t .Find the doubling time. Round your answer to the nearest tenth.
A. 22.5 yr B. 41.0 yr C. 28.4 yr D. 14.2 yr
Find the derivative of the function.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?