For your next print mail campaign, you learn that the cost to print 5,000 postcards is $4,800 and cost to print 15,000 is
$5,500. What is the marginal (extra) cost per postcard for the additional 10,000?
a) $0.05
b) $0.07
C) $0.09
d) $0.11
HELP ASAP

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

might be the correct answer will be question number 2

i would say c

step-by-step explanation: