Jonathan goes to the store and purchases 3 pencils for $0.28 each , and y number of erasers for $0.38 each . Write an expression
1 answer:
The expression 1.22y is the amount spent by Jonathan.
<u>Step-by-step explanation</u>:
- The cost per pencil = $0.28
∴ The total cost of 3 pencils = 0.283 = $0.84
- The cost per eraser = $0.38
∴ The total cost of y erasers = 0.38y = $0.38y
Jonathan spent = Total cost of pencil + total cost of eraser
⇒ 0.84 + 0.38y
⇒ 1.22y
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Answer:
2/3
Step-by-step explanation:
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ANSWER
EXPLANATION
The given function is a piecewise defined function.
is the y-value that corresponds to
To determine that y-value, we need to trace from
to where it meets the graph.
We then trace to the y-axis to determine the corresponding y-value as shown in the diagram.
From the graph, we can see that this x-value corresponds to a y-value of
This implies that, when
Therefore
See graph.
EXPLANATION
The given function is a piecewise defined function.
is the y-value that corresponds to
To determine that y-value, we need to trace from
to where it meets the graph.
We then trace to the y-axis to determine the corresponding y-value as shown in the diagram.
From the graph, we can see that this x-value corresponds to a y-value of
This implies that, when
Therefore
See graph.