The rate for mailing an envelope is $0.80 per ounce. choose a function rule that represents the total cost, c(w), to mail an envelope weighing w ounces. how much will it cost to mail an envelope that weighs 5 ounces?

  c(w)  = 0.80 w       and  the cost of 5 ounces is $4

Step-by-step explanation:

To solve this we can simply use proportionality

from the question,

$0.80    =     1   ounce

c(w)         =     w

cross multiply

c(w)   =  $0.80 w

Therefore a function rule that represents  the  cost c(w)   is $0.80 w

For the second part of the question, we are to find the cost of an envelope that weighs 5 ounce

we have different way of doing this, the first of which is to just use our function rule;

c(w)   =  $0.80 w

we substitute w=  5 into the function. Hence;

c(5)   =   $0.80 × 5   =   $4

OR

We can use a longer method;

let x = the cost of 5 ounces

$0.80   =   1   ounce

  x         =    5 ounces

cross multi[ply

x =   $0.80   ×   5  =    $4

Therefore, the  cost of mailing an envelope that weighs 5 ounces is $4.  

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all