The linear equation that models the cost for having x additional family members added is:
c(x) = $75 + $10.99*x
Here we know that the plan has a fixed price of $75 plus $10.99 for each family member added beyond the primary account holder.
Then if there are x family members added, the cost will be:
$75 + $10.99*x
Then the linear equation that models the cost for having x additional family members added is:
If you want to learn more about linear equations:
brainly.com/question/1884491
#SPJ1
Answer:
\sqrt{x}
Step-by-step explanation:
:)