Ernie has two cell phones and obtains positive utility from talking on both. His utility using AT&T (x1) and Verizon (x2) is given by: U(x1, x2)= x_1 ^0.5+ x_2^0.5 The price of calls at AT&T is $1 per unit and the price of calls at Verizon is $4 per unit. Ernie spends $2000 on phone calls per year a) What is Ernie’s optimal bundle? (Hint: You may use the Lagrange Method or simply set the MRS equal to the price ratio, and plug this into the budget constraint) b) What is Ernie’s utility at this optimal bundle?

c) Why is it the case that at the optimal bundle Ernie is using Verizon (the more expensive service)? Why would he not spend all his money on AT&T (the less expensive service)?

its definatley   this on your answer choice?

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98