Range of f(x) = 1/7(9)x =
All real numbers greater than 0.
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The question is an illustration of multiplication model.
The multiplication model is: 
From the figure, the shaded portions are:
So, the multiplication model represents:
This gives
Express as decimal
Hence, the multiplication model is:
Read more about multiplication models at:
brainly.com/question/1928793
Answer:
b
Step-by-step explanation:
Answer:
Billy has $27.51
Step-by-step explanation:
First let's set up an equation to solve this problem.
Assign a variable to Billy's amount. Let's make it x.
Then we just interpret the problem and solve:
2x - 1.30 = 53.72
+1.30 +1.30
----------------------------
2x = 55.02
(Divide by 2 on both sides)
----------------------------
x = $27.51
2x = Billy's amount doubled
2x - 1.30 = Taking away 1.30 from double Billy's amount
53.72 = Sara's amount
