Dg's plumbing and heating charges $50 plus $70 per hour for emergency service. bill remembers being billed just over $450 for an emergency call. how long to the nearest hour was the plumber at bill's house?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.