Aship is sailing due west when the captain sees a lighthouse at a distance of 20 km on a bearing of 230°.
a) draw a diagram to model this situation
b) how far must the ship sail before the lighthouse is 16 km away?
c) how far must the ship sail beyond the point in b before the lighthouse is again at a distance of 16 km from the ship?
d) what is the bearing of the lighthouse from the ship the second time the two are 16 km apart?

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

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