Solve the problem.Using a phone card to make a long distance call costs a flat fee of $0.76 plus $0.15 per minute starting with the first minute. What is an equation of the form
for this situation?
A. y = 0.15x
B. y = 0.15x + 0.76
C. y = 0.76x
D. y = 0.76x + 0.15
Answer: B
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Find the area of the surface generated by revolving the curve about the indicated axis. y = , 3/2 ? x ? 9/2; x-axis
A. ?
B. ?
C. ?
D. ?
Plot the complex number.z = 3 + i
A.
B.
C.
D.
Solve the problem.The cost C of producing t units is given by C(t) = 2t2 + 7t, and the revenue R generated from selling t units is given by For what values of t will there be a profit?
A. t > 6 B. t > 8 C. t > 0 D. t > 7
Use the given information to write an equation. Let x represent the number described in the exercise. Then solve the equation and find the number.Four times a number added to 8 times the number equals 60. Find the number.
A. 4x + 8x = 60; 5 B. 4x(8 + x) = 60; 7.5 C. 4x - 8x = 60; -7.5 D. 4(x + 8) = 60x; 0.6