Suppose the life of a particular brand of calculator battery is approximately normally distributed with a mean of 75 hours and a
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Answer:
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
Let
c ----> the total cost of the boat rental
d ---> is the number of days, the family rents the boat
we know that
Kaya's family spends $105 to rent a boat for 7 days
so
For d=7 days, c=$105
Find the value of the constant of proportionality k
substitute the given values
therefore
The linear direct equation is equal to