7. 1!. Which of these sets of points could describe a function? 5
{(4.-2), (-1,5), (-2,-4), (4,-5)}
[{(-6,5), (1,7), (-3,-2), (1, -9)}
'{(5.-11), (4,-2), (6,4), (4,-5)}
{(3,-1), (-6, 1), (2-7), (1,-6)}

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

ok so what's the question?

step-by-step explanation:

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x