For the next three questions, Qin has the utility function U(x₁, x₂) = x₁+ x₁x₂, where x₁is her consumption of good 1 and x₂is her consumption of good 2. The price of good 1 is p₁, the price of good 2 is p₂, and her income is M.

Q1. Which pair of bundles (x₁, x₂) are both on the same indifference curve?

a. (3, 8) and (2, 10)

b. (1, 9) and (5, 1)

c. (2, 2) and (4, 1)

d. (5, 3) and (1, 10)

e. (3, 3) and (6, 2)

Q2. Setting the marginal rate of substitution equal to the price ratio yields this equation:

p₁/p₂= (1+x₂)/(A+x₁)

where A is a number. What is A?

Q3. Suppose p₁= 11, p₂= 3 and M = 63. What quantity of good 2 will Qin demand?