Answer:
583 rounded to the nearest whole number
Step-by-step explanation:
other wise 583.3333333333333333333333333333
Jenny has $34.10 left to spend on those last two gifts
Explanation: she starts with $60, spends $25.90 and the difference(answer of a subtraction problem) is now left with $34.10
Using linear functions, it is found that:
- Plan A is cheaper for less than 150 messages.
- Plan B is cheaper for more than 150 messages.
<h3>What is a linear function?</h3>
A linear function is modeled by the following rule:
y = mx + b
In which:
- m is the slope, which is the rate of change, that is, the change in y divided by the change in x.
- b is the y-intercept, which is the the value of y when the function crosses the x-axis, that is, when x = 0.
For each plan, we have that:
- The slope is the cost per message.
- The intercept is the fixed monthly cost.
Hence the cost functions for sending x messages are given as follows:
The costs will be the same when:
A(x) = B(x)
Hence:
0.1x = 12 + 0.02x
0.08x = 12
x = 12/0.08
x = 150.
Due to the lower intercept of plan A, and the lower cost per message of plan B, we have that:
- Plan A is cheaper for less than 150 messages.
- Plan B is cheaper for more than 150 messages.
More can be learned about linear functions at brainly.com/question/24808124
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Step-by-step explanation:
10÷24= .41 cents per pound
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