Value: 4 Which statement is incorrect about functions?
a. For each item in the domain there is only one item associated with it in the range.
b. For each item in the range there is only one item associated with it in the domain.
c. Given the function y=f(x) = 2x +1, when x=1, f(1)=3.
d. Given the function y=f(x)=x, when x = 2, f(2) = 2.

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box