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Mathematics 13 Online
OpenStudy (anonymous):

Given f(x) = –3x – 7, what is f(–4)? A. –14 B. 40 C. –1 D. 5

Nnesha (nnesha):

f(-4) here x = -4 so replace x by -4 and then solve :-)

OpenStudy (anonymous):

....im lost :/

Nnesha (nnesha):

equation is \[\huge\rm f(\color{red}{x})= -3x -7 \rightarrow f(\color{Red}{-4})\] x=-4 so substitute -4 for x

OpenStudy (anonymous):

oooh okay sorry, hold on :)

OpenStudy (anonymous):

is it D?

Nnesha (nnesha):

yea

OpenStudy (anonymous):

thanks

Nnesha (nnesha):

np

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