A group of pirates found a treasure map. It told them to go 3 miles south, 5 miles west, 9 miles north, 6 miles east, 2 miles south, 1 mile east, 13 miles west, and then 19 miles north. Captain Jack Sparrow found the treasure first because he used a shortcut. Write a single rule describing what route Captain Jack took. x= y=

X=-11 Y=23

Step-by-step explanation:

You can look at just the east and west (X) parts separate from the north and south (Y).

East/West

5 miles west ( X= - 5 )

6 miles east ( X = 1 ) which is -5 + 6

1 miles east ( X = 2 ) which is 1 + 1

13 miles west ( X = -11 ) which is 2 - 13

So X = -11

North/South

3 miles south ( Y = -3 )

9 miles north ( Y = 6 ) which is -3 + 9

2 miles south ( Y = 4 ) which is 6 - 2

19 miles north ( Y = 23 ) which is 4 + 19

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

=

x=0.8898305 is the answer to that equation