Respuesta :

Answer:

[tex]\mathsf {x = 11}[/tex]

Step-by-step explanation:

[tex]\textsf {Let the cost of a single book be x.}[/tex]

[tex]\textsf {Formed equation :}[/tex]

[tex]\implies \mathsf {94 - 7x = 17}[/tex]

[tex]\implies \mathsf {7x = 77}[/tex]

[tex]\implies \mathsf {x = 11}[/tex]

Each book costs approximately $11
X=11
After buying
7 books, Sally had
$17 left over from $94

The total amount sally spent on each book would be $11

94-17=77

X= 77 divided by 7 which equals 11

X=11

Hope this helps :)