Answer:
Step-by-step explanation:
45, 41, 37, 33, 29, ....
a₁ = 45
a₂ = 45 - 4 = 41
a₃ = 41 - 4 = 37
a₄ = 37 - 4 = 33
a₅ = 33 - 4 = 29
...
It's an arithmetic sequence.
a₁ = 45, d = -4
A general term of an arithmetic sequence:
aₙ = a₁ + (n - 1)d
Substitute:
aₙ = 45 + (n - 1) · (-4) = 45 - 4n + 4 = -4n + 49
-4n + 49
it is going down by 4 each step, hence, -4 and 45 -- 4 = 45 + 4 = 49.
First box: y/x = 38/2 = 19
Second box: y/x = 57/3 = 19
Third box: y/x = 76/4 = 19
Constant of proportionality = 19
Equation: y = 19x
72.8
Tax 3.78 $ and tip 7.56 $
42*0.09 = 3.78
42*0.18 = 7.56
16
Number of Markers =
