Stefanie is three times as old as Hannah. Four years ago, the sum of their ages was 28. How old are they now? Be sure to define
1 answer:
You might be interested in
Answer:
a)
b)
Step-by-step explanation:
For this case we can use a linear model to solve the problem.
s) Create an equation to express the increase on the price tickets and the number of seats sold
number of seats, if w analyze the info given the number of seats after increase the price is given by
.
And let P the price for the ticket. So after the increase in ticket price the expression for the increase is P-200.
We have an additional info, for each increase of $3 the number of setas decrease 1. And the equation that gives to us the price change in terms of the increase of price is:
So then our linear equation is given by:
b) Over a certain period, the number of seats sold for this flight ranged between 90 and 115. What was the corresponding range of ticket prices?
So for this case we just need to replace the limits into the linear equation and see what we got:
So the corresponding range of ticket prices is:
Answer:
See explanation
Step-by-step explanation:
Given two expressions:
and
a. When
then
and
b. When
then
and
c. Since the value of both expressions at s = 12 are different, the expressions are not equivalent.