Aphone company offers two monthly plans. plan a costs $26 plus an additional $0.11 for each minute of calls. plan b costs $16 plus an additional $0.16 for each minute of calls. for what amount do the two callings costs the same? __ minutes what is the cost when the two plans cost the same?

Function for the cost of using Plan A: Ca(x) = $26 + ($0.11/min)x

Function for the cost of using Plan A: Ca(x) = $16 + ($0.11/min)x

After how many minutes would the costs be equal? Set these two expressions equal to one another and solve the resulting equation for x:

$26 + ($0.11/min)x

Cb(x) = $16 + ($0.16/min)x = $26 + ($0.11/min)x

To solve this for x, subtract $16 from both sides:

($0.16/min)x = $10 + ($0.11/min)x

Combining like terms: ($0.05/min)x = $10.

Dividing both sides by ($0.05/min): x = ($10) / ($0.05/min) = 200

After 200 minutes, the costs of the two services would become the same, but would not stay the same.

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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