Modeling linear situations practice

A taxi charges a $\text{\char36}4$ boarding fee plus $\text{\char36}2.50$ for each mile driven. Let $x$ be the number of miles and $y$ be the total cost in dollars. Which equation models the situation?

A gym charges a $\text{\char36}30$ monthly membership plus $\text{\char36}5$ for each fitness class. Let $x$ be the number of classes and $y$ be the total monthly cost in dollars. Which equation models the situation?

An amusement park charges $\text{\char36}12$ for admission and $\text{\char36}3$ for each ride. Let $x$ be the number of rides and $y$ be the total cost in dollars. Which equation models the situation?

Elena already has $\text{\char36}75$ in her savings account and deposits $\text{\char36}20$ each week. Let $x$ be the number of weeks and $y$ be the account balance in dollars. Which equation models the situation?

A school club starts a fundraiser with $\text{\char36}50$ already collected and earns $\text{\char36}8$ for each cake sold. Let $x$ be the number of cakes sold and $y$ be the total money raised in dollars. Which equation models the situation?

A kayak rental shop charges $\text{\char36}18$ per hour with no upfront fee. Let $x$ be the number of hours rented and $y$ be the total cost in dollars. Which equation models the situation?

A tutor charges $\text{\char36}35$ per session and no registration fee. Let $x$ be the number of sessions and $y$ be the total cost in dollars. Which equation models the situation?

The temperature outside is $68^\circ\text{F}$ at sunset and drops $2^\circ\text{F}$ each hour. Let $x$ be the number of hours after sunset and $y$ be the temperature in degrees Fahrenheit. Which equation models the situation?