Answer:
he spent practicing the cello 10.5 hours
Step-by-step explanation:
The proportion is 1.5 (3/2)
7x1.5 = 10.5
the answer is actually study and you would know
{ (0, 0), (4, 0), (6, 0) }
In order to be a function, ordered pairs must have values of x, or the domain, that are different and do not repeat.