Answer:
x = -15
Step-by-step explanation:
6 + x/3 = 1
6 - 6 + x/3 = 1 - 6
x/3 = -5
x/3(3) = -5(3)
6 + (x/3) = 1 (subtract 6 from both sides)
(x/3) = 1 - 6
x/3 = -5 (multiply both sides by 3)
x = -5 (3)
{(-2, 6), (-5, -1), (3, 7), (-5, 0)}
Domain: The domain is all the x-values (-2, -5, 3, -5)
Range: The range is all the y-values (6, -1, 7, 0)
Function: It's not a function because of the x-value -5 is repeating.
132, 390, 244, 492
those are the answers in order
a) 5 cm(25000)(1 m/100 cm)(1 km/1000 m) = 1.25 km
b) 2.2 km (1000 m/km)(100 cm/m) / 25000 = 8.8 cm