Answer:
Paul spent $12.65
Step-by-step explanation:
Create a system of equations where p is how much Paul spent and t is how much Tammy spent.
p + t = 37.85
p = t - 12.55
Solve by substitution:
p + t = 37.85
(t - 12.55) + t = 37.85
2t - 12.55 = 37.85
2t = 50.4
t = 25.2
Find how much Paul spent by plugging in 25.5 as t into p = t - 12.55
p = t - 12.55
p = 25.2 - 12.55
p = 12.65
So, Paul spent $12.65
That's a handsome list of numbers you've got there.
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Answer:
range = (4, 20, 52 )
Step-by-step explanation:
Substitute the given values of x from the domain into the equation and evaluate for y ( the range )
x = 1 : y = 2(1)² + 2 = 2 + 2 = 4
x = 3 : y = 2(3)² + 2 = 18 + 2 = 20
x = 5 : y = 2(5)² + 2 = 50 + 2 = 52
range is y ∈ {4, 20, 52 }
