Challenge  A cell phone plan costs $22.90 per month for 500 minutes of talk time. It costs an additional $0.04 per minute for each minute over 500 minutes. To get e-mail access, it costs 20% of the price for 500 minutes of talk time. Your bill, which includes e-mail, is the same each month for 5 months. The total cost for all 5 months is $155.00. Write and solve an equation to find the number of minutes of talk time you use each month. Let m represent the number of minutes over 500 minutes each month. Which equation represents the given situation?
A.
155.00=5(0.04m+22.90+0.20(22.90)) B.
155.00=5(m+22.90+0.80(22.90))
C.
155.00=5(m+22.90)
D.
155.00=5(0.04m+22.90)
how many minuets of talk time each month ?

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.

3x + 4y -25 =0 represents the amount of change sianna should recieve

3 qrs + 3/2 xy hope this : /

step-by-step explanation:

answer: the answer for that is 22/3