Jack is trying to determine how he can save money by cutting his electricity bill. he is currently on a standard use plan for electricity and pays 7.5 cents per kwh. he keeps track of when he uses electricity and is thinking about switching to an interval use plan for electricity which costs 3 cents per kwh for off-peak use and 15 cents per kwh for on-peak use. off-peak hours are from 8pm - 8am and on-peak hours are from 8am - 8pm. below is the chart of his electricity usage: jack’s electricity usage per month 1200 kwh between 8pm and 8am 400 kwh between 8am and 8pm explain and justify which plan would best suit his needs. a. jack should not switch to the interval use plan, which would cost $24 more per month. b. jack should switch to the interval use plan, which would save him $24 per month. c. jack should switch to the interval use plan, which would save him $96 per month. d. jack should not switch to the interval use plan, which would cost $96 more per month.

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.

~

mean, 40.6

step-by-step explanation: