2x + 5 /3x + 7 = 3/5 find X plz
1 answer:
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See the attached figure.
Water model ⇒⇒⇒ y = -0.3 x² + 3x ( blue graph )
Light model ⇒⇒⇒ -2x + 5.5 y = 19.5 ( red graph )
The intersection between the two models A and B
A = ( 1.657 , 4.148 )
B = ( 7.13 , 6.138 )
<span>B is at a higher level than point A
</span>
<span>The distance from the ground level to point A = y-coordinate of point A
= 4.148
</span>
Water model ⇒⇒⇒ y = -0.3 x² + 3x ( blue graph )
Light model ⇒⇒⇒ -2x + 5.5 y = 19.5 ( red graph )
The intersection between the two models A and B
A = ( 1.657 , 4.148 )
B = ( 7.13 , 6.138 )
<span>B is at a higher level than point A
</span>
<span>The distance from the ground level to point A = y-coordinate of point A
= 4.148
</span>
The pay will be same for 8 months.
Step-by-step explanation:
At Comcast;
Installation fee =$60
Per month charges = $50.45
Let,
x be the number of months,
C(x) = 60+50.45x
At AT&T;
Per month charges = $57.95
A(x) = 57.95x
When the amount will be same,
C(x)=A(x)
Dividing both sides by 7.5
The pay will be same for 8 months.
Keywords: functions, division
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