Colleen plans to start a small business by making and selling skirts. a sewing machine costs $250, and she estimates that she will spend $15 on materials for each skirt. which expression represents colleen’s total costs, in dollars, for making x skirts?

Step-by-step explanation:

Given : Colleen plans to start a small business .

               A sewing machine costs $250,

               She will spend $15 on materials for each skirt

To Find :  

Expression that represents Colleen’s total costs, in dollars, for                     making x skirts C(x)

Solution :

Let x denotes the no. of skirts and Sewing machine cost will remain constant

Cost she will spend on each skirt is $15.

⇒

Thus , Expression that represents Colleen’s total costs, in dollars, for                     making x skirts C(x) is  

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560