SAT Math: Function Writing 2

1. The amount of money a cook earns at a food fair is directly proportional to the number of people that come to his booth. The cook earns $144 when 9 people visit his booth.

How much will the cook earn if 37 people visit his booth?

$333

$592

$1296

$450

2. The amount of money a cook earns at a food fair is directly proportional to the number of people that come to his booth. The cook earns $144 when 9 people visit his booth.

The cook uses 42% of the money earned to pay for supplies. What is the profit the cook makes when 9 people visit his booth?

$60.48

$248.64

$83.52

$343.36

3. Last week, Christine worked 13 hours more than Erik. If they worked a combined total of 47 hours, how many hours did Christine work last week?

4. In an online game, each player starts with $x$ points and lose 10 points each time a task is not completed. They win 20 points each time a task is completed. If a new player who completes 3 tasks and fails 30 tasks has a score of 400, what is the value of $x$ ?

970

1060

560

640

5. Tom and Brad each order an entree at a restaurant. The price of Tom's dish was $x$ dollars, and the price of Brad's dish was $4 more than the price of Tom's dish. If they decide to split the cost of the meal evenly and each pay a 20% tip, which of the following expressions represents the amount, in dollars, each of them paid?

$1.2x+2.4$

$2.5x+3$

$1.5x+2$

$2x+4$

6. A journalist posts a new article online. She earns $0.15 each time the article is shared and $0.05 each time the article is liked. Which of the following expressions represents the amount, in dollars, that the journalist earns if the article is shared $s$ times and liked $l$ times?

$.055s+.15l$

$.15s-.05l$

$.15s+.05l$

$.05s-.15l$