Let the length of rectangle be L and the width of rectangle be W.
Since length exceeds the width by 25 inches, length will be
L = W + 25
Now the perimeter, P, is given by
P = 2(L + W)
Substituting L = W + 25 in the above equation,
P = 2(W + 25 + W)
P = 2(2W + 25)
P = 4W + 50
But P = 86 inches
P = 4W + 50 = 86
4W = 86 - 50 = 36
W = 36/4 = 9
Hence, width W = 9 inches.
Length L = W + 25 = 9 + 25 = 34 inches.
Step-by-step explanation:
Answer:
1 song costs $1.21
Step-by-step explanation:
The distance between the number of songs for 16 and 18 is 2, and the same from 18 to 20. So with this we can find the difference between the costs correlated with these amounts of songs and divide by 2 to get the cost per song.
21.78 - 19.36 = 2.42
24.20 - 21.78 = 2.42
2.42 / 2 = 1.21
This means for every 1 song bought, you pay $1.21
