Small tug boats pull cruise ships up and down rivers to prevent them from grounding. Cruise ships anchor 18 km away from the river port. A tug boat can travel 12 km downstream in the same time it takes it to travel 8 km upstream. If the speed of the current is 6 km/h, calculate the travel time it takes for the tug boats to go upstream from the cruise ship to the river port and then downstream back to the cruise ship.

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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.

the radius is 2 times the diameter.

step-by-step explanation: