Explanation:
we should use income statement to find the new profit and the gross profit first then we can find out the expenses while doing it down on the statement anything which had written expenses is expenses.
Answer:
a. Whataburger is not using the optimal cost-minimizaing mix of cashier and kiosks.
b. Whataburger should hire more cashier and rent fewer kiosks in order to improve its mix of inputs and minimize the cost
Explanation:
a. According to the given data we have the following:
Let "C" is a cashier.
"K" is a kiosk
MPC = 48 (Marginal Product of Cashier)
MPK = 32 (Marginal Product of Kiosk)
PC = $15 (cashier can be hired for a wage of $15)
PK = $12 (Kiosk rents for $12)
At optimal cost minimization point, (MPC / MPK) = (PC / PK)
(MPC / PC) = (MPK / PK)
(MPC / PC) = (48 / 15) = 3.2
(MPK / PK) = (32 / 12) = 2.67
Since the (MPC / PC) and (MPK / PK) is not equal. It implies Whataburger is not using the optimal cost-minimizaing mix of cashier and kiosks.
b. We have to use the following:
(MPC / PC) > (MPK / PK)
i.e., 3.2 > 2.67
It means Whataburger hire more cashier and rent fewer kiosks in order to improve its mix of inputs and minimize the cost.
Answer:
-0.0246 or -2.46%
Explanation:
The duration 't' of his investment is:

The future value ($10,668,500) of an initial investment ($12,700,500) at a rate 'r' for a period of 7 years is given by:
![10,668,500=12,700,500*(1+r)^7\\1+r=\sqrt[7]{\frac{10,668,500}{12,700,500}}\\1+r=0.9754\\r=-0.0246=-2.46\%](https://tex.z-dn.net/?f=10%2C668%2C500%3D12%2C700%2C500%2A%281%2Br%29%5E7%5C%5C1%2Br%3D%5Csqrt%5B7%5D%7B%5Cfrac%7B10%2C668%2C500%7D%7B12%2C700%2C500%7D%7D%5C%5C1%2Br%3D0.9754%5C%5Cr%3D-0.0246%3D-2.46%5C%25)
His annual rate of return was -0.0246 or -2.46%.
*A negative rate of return means that money was lost in this investment
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