eternity88091
26.07.2019 •
Mathematics
Write the function shown in the graph.
a) f(x) = |x| + 4
b) f(x) =|x| -4
c) f(x) = |x+4|
d) f(x) = |x-4|
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Ответ:
let x = orginal price of the shorts
$21 = x(100%-20%) * 1.05
$21 = x(80%) * 1.05
$21 = 0.8x * 1.05
Subtract 1.05 from both sides
$19.95 = 0.8x
Divide 0.8 from both sides
$24.9375 = x
So the orginal price of the shorts are about $24.94