hello :
<span> y = x2 + 3x -3.... (1)
2x - 1 = y ..........(2)
subsct in (1) :
2x-1 = x² +3x -3
x² + x -2 = 0
(x+2 )(x-1 ) = 0
x+2=0 or x-1 = 0
x=-2 or x=1
if : x = -2 y = 2(-2)-1 =-2
if : x = 1 y = 2(1)-1 = 1
</span><span>values of x will (x, y) be a solution of the system : (-2,-2),(1,1)</span>
for 201 onwards we will see that the cost in A-Plus Printers less than the cost at Print-and-More
<h3>For how many flyers is the cost at A-Plus Printers less than the cost at Print-and-More?</h3>
A-Plus Printers charges $26 plus $0.12 per flyer, so if you print x flyers, the total cost is:
f(x) = $26 + $0.12*x
For Print-and-More, they charge only $0.25 per flyer, so here the equation is:
g(x) = $0.25*x
Here we need to see for which value of x the costs are the same:
f(x) = g(x)
$26 + $0.12*x = $0.25*x
Now we can solve that linear equation for x:
$26 = $0.25*x - $0.12*x
$26 = $0.13*x
$26/$0.13 = 200
This means that for 200 flyers, the cost is the same in both places, then for 201 onwards we will see that the cost in A-Plus Printers less than the cost at Print-and-More.
If you want to learn more about linear equations:
brainly.com/question/1884491
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Answer:
the answer is c
Step-by-step explanation:
(B), (C) And (D) are right for the equation y = 8 - x but none of those are true in the second equation.
The initial dimenssions of the park lot are:
length: 140 ft
width: 90 ft
initial area: 140 * 90 = 12,600 ft^2
Area increased 29% = 12,600 * 1.29 = 16,254 ft^2
width of the strips: x
New length: 140 + x
New width: 90 + x
New area: (140+x)(90+x) = 16,254
Solution of the equation:
12600 + 230x + x^2 = 16254
=> x^2 + 230x - 3654 = 0
Use the quadratic formula.
x = {-230 +/- √[ 230^2 - 4*1*(-3654) ]} / 2 =
x = 14.92
The other solution is negative so it is discarded.
Answer: 15 ft
