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OpenStudy (clamin):
Which of the following functions has a range of all real numbers? A. y= -7x+2 B. y= 4x^2-1 C. y= -3x^2+5 D. y= 6 (2^x)
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OpenStudy (welshfella):
Hint: x^2 has a minimum value of 0. It cannot be negative .
OpenStudy (sweetburger):
Parabolic functions usually have a set top or bottom value to the range. However, linear equations have no top or bottom value to the range.
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