Respuesta :

H=Hours he an skate; T=total cost

T=$7.00+($1.50/hr)H

T-$7.00=($1.50/hr)H

(T-$7.00)/($1.50/hr)=H

For T=$19:

($19.00-$7.00)/($1.50/hr)=H

$12.00/($1.50/hr)=H

8hrs=H

ANSWER: Jon can skate 8 hours for $19.00.

Hope this helps!

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