“Deandre will donate up to $500 to charity. The money will be divided between two charities: the City Youth Fund and the Educati
onal Growth Foundation,
Deandre would like the famount donated to the Educational Growth Foundation to be at least four times the amount donated to the City Youth Fund. Let x denote
the amount of money (in dollars) donated to the City Youth Fund, Let y denote the amount of money (in dollars) donated to the Educational Growth Foundation,
Shade the region corresponding to all values of x and y that satisfy these requirements” please help I’ve been stuck on this forever.
Deandre would like the famount donated to the Educational Growth Foundation to be at least four times the amount donated to the City Youth Fund. Let x denote
the amount of money (in dollars) donated to the City Youth Fund, Let y denote the amount of money (in dollars) donated to the Educational Growth Foundation,
Shade the region corresponding to all values of x and y that satisfy these requirements” please help I’ve been stuck on this forever.
1 answer:
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Answer:
50
Step-by-step explanation:
and
can be expressed in complex form, with
= i
=
=
×
= 8i
=
=
×
= 4i
the factors can then be expressed as
(6 + 8i)(3 - 4i) ← expand using FOIL
= 18 - 24i + 24i - 32i² [ i² = ( )² = - 1 ]
= 18 - 24i + 24i + 32 ← collect like terms
= 18 + 32 + 0
= 50