Respuesta :
Answer:
[tex]S=45m+15[/tex]
Step-by-step explanation:
we have
E------>the number of sit-ups
m----> the time in minutes
S----> the number of sit-ups after drinking the sports drink
[tex]E=15m+5[/tex] ----> equation A
[tex]S=3E[/tex] ----> equation B
substitute the equation A in the equation B
[tex]S=3(15m+5)[/tex]
[tex]S=45m+15[/tex]
Answer: Its the Second one!
Step-by-step explanation: Ur welcome <3