Eva spent $11.61 downloading songs, each song cost $1.29. four students wrote and solved equations to find s, the number of songs that she downloaded. which student wrote and solved the equation correctly?
a. seba’s work
1.29s=$11.61
s=10
b. ari’s work
$1.29s=$11.61
s=9
c. erick’s work
s/$1.29=11.61
s=14.98
d. daniel’s work
s/$1.29=$11.61
s=9

Option B.

Step-by-step explanation:

Let

s-----> the number of songs that Eva downloaded

we know that

The linear equation that represent the situation is

Solve for s

Divide by 1.29 both sides

therefore

Ari's work is correct

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490