THIS IS AN EASY YES OR NO QUESTION! Is this a function?
{(2, 100), (13, 13), (14, 5), (60, 4), (100, 1)}

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

The ratios of boys to girls on a soccer league is 2: 5. if there are 28 boys, how many girls are playing soccer? extra points! will mark as brainiest asap

What percent of 18 is 24? and plz explain thx.