Which situation can be modeled by a linear function? * 1 point The value of a car decreases by 10% every year. The number of fish in a lake doubles every 5 years 2 liters of water evaporate from a pool everyday The amount of caffeine in a person's body decreases by 1/3 every 2 hours.

The third equation where 2 liters of water evaporate from a pool every day is linear

Step-by-step explanation:

One way to think about this is that the other equations would require exponents, or solving non-algebraically would require know the subsequent output.

However, if 2 liters of water evaporate from a pool every day, the equation would be y= number of liters in pool - 2x

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form