n the past eight months, Raquel's income increased from $1,000 per month to $1,200 per month. Raquel and her husband usually made 16 cheese sandwiches in a month, however due to Raquel's new salary, they now only make 10 sandwiches per month. Using the mid-point formula, the income elasticity is _________ and cheese sandwiches are __________ goods.

• a.)
• b.)
• c.)
• d.)

-0.4; inferior

1.9; normal

0.5; normal

-2.5; inferior