Kate enjoys horseback riding and has been wanting a new show saddle for her
horse. she has been saving her baby-sitting money for a year and finally has the
$680. prior to making the purchase, kate's dad congratulates her on meeting her
savings goal. he also reminds her to really consider the opportunity cost of her
decision. kate is confused about what her dad means by this. how would you
explain opportunity cost to kate?

I would explain to her that she should think about what she could actually do with the money.

Explanation:

I would tell kate she should really consider how she should spend her money and what she should actually spend it on. If she actually wants the horse saddle she should buy it, but she should think about what she actually might want or need later.

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.

answer; coefficient of correlation;