2x+5y=619
x=10y-3
________
2(10y-3) +5y=619
20y-6+5y=619
25y=619+6
25y=625
y=625/25
y=25
x=10*25-3
x=250-3
x=247
I believe it would be (b) (-2,1)
<u><em>16.1 is the final answer. </em></u>
<em>Product- it's going to be multiply by the numbers only.</em>

<em>You can also round up to the nearest tenths is 16.0</em>
<em>Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie</em>
-6 is a rational I believe
15*6=90 hours
90 *8.25=742.50
Your answer would be $742.50. Hope it helps!