Yes area, the amount of surface covered
18 + 1.5*c
that is how much it costs to get a large cheese pizza with c toppings
6-12 divides by 3 + 8 - 9 is 1
18000 represents the price of the new car.
The value of the car in 6 years can be found by substituting 6 for the variable t, as follows:
In 6 years, it will be worth around $8359.27.
The equation for the car worth $20000 is this:
In 6 years, the other car will be worth $7542.99, so the car worth $18000 will have more value in 6 years.
8800 because the last two digits are above 50.