Two groups of campers, Group A and Group B, hiked two different routes from their campsite to a waterfall. Group A hiked through Vista Point to reach the waterfall. Group B hiked directly to the waterfall. The figure shows the distances they hiked.

Which simplified expression can be used to find the difference in the number of miles hiked by the two groups?

a) 2x - 1

b) 2x + 1

c) 2x + 3

d) 2x + 7

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

the diameter is 16 cm. are you a teacher?

step-by-step explanation:

answer: it is 8

step-by-step explanation:

you know why its 8