Areal estate agent is considering changing her cell phone plan. there are three plans to choose from, all of which involve a monthly service charge of $20. plan a has a cost of $.40 a minute for daytime calls and $.20 a minute for evening calls. plan b has a charge of $.50 a minute for daytime calls and $.14 a minute for evening calls. plan c has a flat rate of $75 with 200 minutes of calls allowed per month and a charge of $.38 per minute beyond that day or evening. a. determine the total charge under each plan for this case: 130 minutes of day calls and 50 minutes of evening calls in a month. (do not round intermediate calculations. round your answer to 2 decimal places. omit the "$" sign in your response.) cost for plan a cost for plan b cost for plan c c. if the agent will use the service for daytime calls, over what range of call minutes will each plan be optimal? (round each answer to the nearest whole number. include the indifference point itself in each answer.) plan a is optimal from zero to minutes onward. minutes. plan c is optimal from d. suppose that the agent expects both daytime and evening calls. at what point (le. percentage of total call minutes used for daytime calls) would she be indifferent between plans a and b? (do not round intermediate calculations. enter your answer as a percentage rounded to 2 decimal places. omit the sign in your response.)

on friday there were 15 birds

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

5050 i think

step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1