Which of the following sets of ordered pairs represent a function? Check all that are true.
{(-3, 7), (-2, 7), (-1, 7), (0, 7), (1, 7)}
{(1.5, 3), (2.5, 3), (5, -3), (6, 2.5), (9, 11)}
{(-27, 15), (14, 2), (37, 0), (14, 15), (-3, 7)}
{(15, -2), (-2, 15), (11, 7), (-4, -4), (10.2, 3)}
{(1, 2), (3, 4), (5, 6), (6, 10), (7, 40)

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

answer: you need to organize this better it does not make sense.

step-by-step explanation: ?

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%