Orlando lives in south dakota and pays 4% in sales tax. he bought a refrigerator, and the amount he paid after sales tax was applied was $2749.87. what was the approximate cost of the refrigerator before sales tax was applied? a.$2644.11 b.$2738.91 c.$2760.87 d.$2859.86

Option A. $2644.11

Step-by-step explanation:

Orlando lives in South Dakota and pays 4% in sales tax.

He bought a refrigerator, and the amount he paid after sales tax = $2749.87

Let the cost of refrigerator before sales tax be 'x'

Therefore, x + (4% of x) = 2749.87

x + 0.04x = 2749.87

x( 1+0.04 ) = 2749.87

1.04x = 2749.87

x =

x = 2644.105769 ≈ $2644.11

The cost of the refrigerator was $2644.11 before sales tax was applied.

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b