Company A: <span>a one time $100 fee and $50 for each tree
</span>c = 100 + 50t
Company B: <span>one time $80 fee and $60 for each tree
</span>c = 80 + 60t
answer is {c=100+50t c=80+60t (last choice)
The range of the piecewise function would be from [2,infinity), or the second choice.
The viewer mistakenly determined that one of the equations in the system should be 2 x + y = 28. Instead modifications should have been made before applying the equation.
<h3>What is an Equation ?</h3>
An equation is a mathematical statement formed when two algebraic expressions are equated using an equal sign.
Total Questions = 20
Total Points = 28
Correct Answers = +2 points
Incorrect Answers = -1 point
The viewer represents the correct answers with x and the incorrect ones with y.
x+y = 20
for every correct answers 2 points;
and for every incorrect answers, -1 point
This can be written as
2x-y = 28
The viewer's mistake is that; instead of subtracting total incorrect points from the correct points, the viewer added them together;
now
2x-y = 28
x+y = 20
On adding the equations
]3x = 48
x = 16
y = 4
This means that the contestant answered 16 questions correctly and 4 questions incorrectly
The viewer mistakenly determined that one of the equations in the system should be 2 x + y = 28.
To know more about Equation
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Cos(x) is infinitely differentiable, can be expanded using Taylor's series.
The series about c can be expressed as
Substituting cos(x), c= π /4,we have
and since
we can simplify the expansion to
Note that the sign pattern is - - + + - - + + - - ..... following the sign pattern of the derivatives of cos(x).