Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 5x2 + 4, x ? 0
A. f-1(x) =
B. f-1(x) =
C. f-1(x) =
D. Not one-to-one
Answer: A
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Evaluate the expression, if possible.
A. 4 B. not a real number C. -64 D. -4
Using a sum or difference identity, write the following as an expression involving functions of ?.sin (360° + ?)
A. sin ?
B. -cos ?
C. cos ? -
sin ?
D. cos ? +
sin ?
Factor out the GCF from the polynomial.16m9 - 16m6 + 8m3
A. 8(2m9 - 2m6 + 1m3) B. cannot be factored C. 8m3(2m6 - 2m3 + 1) D. m3(16m6 - 16m3 + 8)
Tempco Electronics, a division of Tempco Toys, manufactures an electronic football game. An efficiency study showed that the rate at which the games are assembled by the average worker t hours after starting work at 8 a.m. is
?
units/hour.
?
Find the total number of games the average worker can be expected to assemble in the 4-hour morning shift.
?
__________ units
?
How many units can the average worker be expected to assemble in the first hour of the morning shift? Please round the answer to the nearest whole unit.
?
__________ units
?
In the second hour of the morning shift? Please round the answer to the nearest whole unit.
?
__________ units
What will be an ideal response?