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nataly862011 [7]
3 years ago
7

Yuson must complete 210 min of community service. She does 30 min each day. Which linear equation represents the number of minut

es Yuson has left after x days?
Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0

Answer:

y=-30x+210

Step-by-step explanation:

Let

x -----> the number of days

y ----> the number of minutes Yuson has left

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-coordinate of the y-intercept (initial value)

In this problem we have

The slope is equal to

m=-30\frac{min}{day} ----> is negative because is a decreasing function

b=210\ min ----> initial value

substitute the values

y=-30x+210

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Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

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