OK so we have a combination of trig functions, the quotient rule, and chain rule. How would we set this up using quotient rule to begin with?
Step-by-step explanation:
the second and the 6th options keep the same graph but shift it to the left.
the other options :
the first option changes the graph (the factor -2 stretched and flips the graph).
the third and the 5th options shift the graph up and down. but not to the left.
the 4th option shifts it to the right.
when you add a constant inside the x terms, you shift to the left.
when you subtract a constant inside the x terms, you shift to the right.
e.g. when having f(x+2), then everything, that should happen at x+2 happens already at x. 2 units earlier, and therefore a shift to the left.
in the other direction, f(x-2) makes everything that should have happened at x-2 happen finally at x. so, everything shifts 2 units to the right.
It would be B because that’s the price your paying for the membership
Set up a proportion.
![\sf\dfrac{20}{25}=\dfrac{50}{x}](https://tex.z-dn.net/?f=%5Csf%5Cdfrac%7B20%7D%7B25%7D%3D%5Cdfrac%7B50%7D%7Bx%7D)
Cross multiply:
![\sf1250=20x](https://tex.z-dn.net/?f=%5Csf1250%3D20x)
Divide 20 to both sides:
![\sf~x=62.5](https://tex.z-dn.net/?f=%5Csf~x%3D62.5)
So it will take 62.5 minutes for her to complete the worksheet.