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3 years ago

Evaluate the expression a + c for a = 22 and c = 11.

Mathematics

2 answers:

sineoko [7]3 years ago

8 0

For this case we have the following expression:

$a + c$

We must evaluate the expression when it takes the value of 22 and when c takes a value of 11.

$a = 22\\c = 11$

Substituting the values we have:

$22 + 11$

Equal signs are added and the same sign is placed:

$22 + 11 = 33$

Answer:

bixtya [17]3 years ago

4 0

Answer: 33

Step-by-step explanation: substitute a with 22 and c with 11.

22+11=33

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3 years ago

Charlie has the utility function u(xa, xb) =xaxb. If Charlie's income is $40, the price of apples is $4, and the price of banana

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Answer:

There are 5 apples in the best bundle Charlie can afford

Step-by-step explanation:

If the utility function is u(xa, xb) , where xa represent the quantity of apples and xb is the quantity of bananas then we want to choose the quantity of bananas and apples that maximises the utility of Charlie for the same budget restriction ( get the most benefit for the same money).

The budget restriction is

$4* xa + $2* xb = $40

then

u(xa, xb) =xa*xb

4*xa + 2*xb = 40 → xb = (40 - 4*xa)/2 = 20 - 2*xa

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u(xa, xb) =xa* (20 - 2*xa) = 20*xa - 2*xa²

the maximum of this function is obtained when the derivative of the utility function with respect to xa is 0 . Thus

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