At the deli, two smoked turkey subs and five veggie subs cost $29. Four smoked turkey subs and three veggie subs cost $30. (A) C
reate a linear system to model the equations. (B) Solve the system to determine the cost of a smoked turkey sub and the cost of a veggie sub.
1 answer:
For this case, the first thing we must do is define variables.
We have then:
x: cost of smoked turkey
y: cost of veggie subs
By writing the system of equations we have:
Resolving the system graphically we have the solution is:
See attached image for the graphic solution: You must observe the point of intersection of the lines.
Answer:
smoked turkey = 4.5 $
veggie sub = 4 $
We have then:
x: cost of smoked turkey
y: cost of veggie subs
By writing the system of equations we have:
Resolving the system graphically we have the solution is:
See attached image for the graphic solution: You must observe the point of intersection of the lines.
Answer:
smoked turkey = 4.5 $
veggie sub = 4 $
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Answer:
t = 1.107
Step-by-step explanation:
Finding the solution using derivatives involves finding the lower zero of the quadratic that is the second derivative of the given function. That second derivative will be ...
f''(t) = 12(1.6714)t^2 -6(22.45)t +2(62.27)
= 20.0568t^2 -134.7t +124.54
= 20.0568(t -3.35796)² -101.619 . . . . rewrite to vertex form
Then f''(t) = 0 when ...
t ≈ 3.35796 -√(101.619/20.0568) ≈ 1.10706
__
The solution is perhaps more easily found using a graphing calculator to find the peak of the first derivative. (See attached.) It tells us ...
t ≈ 1.107
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