The batman roller coaster is 2700 feet long. The green lantern roller coaster is 53% longer than the batman roller coaster. about how long is the green lantern roller coaster?
a) 1,269 feet
b) 1,431 feet
c) 4,131 feet
d) 3,969 feet

work:

First set up your proportion

part. 53. x

= =

whole 100. 2700

I'm choosing to cross multiply but there are different methods

so 100x= 143100

then you have to get x by itself so you divide each side by a hundred and x= 1431

here ya go

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c