Answer:
The price was $2560.
Step-by-step explanation:
let x be the original price
x - 15% = 2176 (The price was decreased by 15% and became $2176)
Convert the percentage to decimal form by the percentage dividing by 100, which is the same thing as moving the decimal to the left by two places.
15% = 0.15
0.15x is the value that was shaved off of 2176.
1 - 0.15 = 0.85
Write a new equation and isolate x
0.85x = 2176
x = 2176/0.85 Divide both sides by 0.85
x = 2560
Answer:
A. one solution; lines intersect at one point
B. (x, y) = (3, 4)
Step-by-step explanation:
A linear equation will be represented on a graph by a straight line. A pair of equations will graph as a pair of lines. If the lines are not coincident or parallel, they will intersect at exactly one point. That point is the solution to the pair of equations.
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<h3>A.</h3>
A graph of the given points quickly shows the lines are not parallel or coincident. Each point on line A satisfies the equation that describes the line. Each point on line B satisfies the equation that describes line B. The point of intersection is a point that satisfies both equations.
A pair of distinct non-parallel lines can have at most one point of intersection. Hence there can only be one solution to the pair of equations.
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<h3>B.</h3>
The graph shows the solution to the equations for lines A and B is ...
(x, y) = (3, 4)
Answer:
n = 3
Step-by-step explanation:
8 = 2(n + 1)
8 = 2n + 2
6 = 2n
n = 3