A rollercoaster rises 210 feet into the air, drops 240 feet, rises 80 feet before dropping another 30 feet again. Finally the rollercoaster drops another 50 feet. What is the height of the rollercoaster after the last drop?

So, the height of the rollarcoaster after the last drop is -30

Step-by-step explanation:

From  the given information;

For every rise, there will be  an addition and for every drop there will be a subtraction.

So;

The rollercoaster starts with the rise of 210

i.e.

= +210 - 240 + 80 - 30 - 50

= -30 + 80 - 80

= - 30

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.