James spent 4/5 of his birthday money on three sweaters and four hats each sweater cost twice as much as each hat if he had $35
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<u>Answer-</u>
<u>Solution-</u>
The given data as follows,
After converting all the percentages and fractions to decimal, we can compare them all.
For converting percentages to decimal to divide the number by 100, so
Then converting the fraction into decimal,
As, all the numbers are converted into decimal, now comparing all the numbers,
Given:
Cost of 1 digital song = $1.05
Cost of 2 digital song = $2.10
Cost of 5 digital song = $5.25
To find:
The equation and the cost of 25 downloaded digital songs.
Solution:
Let us take two points (1, 1.05) and (2, 2.10).
Here
Slope:
m = 1.05
Using point-slope formula:
Add 1.05 on both sides, we get
Here x is the independent variable and c is the dependent variable.
So that substitute x = n and y = c.
The equation is c = 1.05 n.
Substitute n = 25 in the equation.
The cost of 25 songs is $26.25.