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KJ4UTS
 one year ago
Use the table below, which gives the cost (C) of n bags of fertilizer, to decide which of the following statements are true.
KJ4UTS
 one year ago
Use the table below, which gives the cost (C) of n bags of fertilizer, to decide which of the following statements are true.

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KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0It looks like A. the nvalues are evenly spaced. B. looks like there is a constant difference Im not exactly sure about C. and D. here.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.2Constant means unchanging. From \(\large\rm 18.75\) to \(\large\rm 25\) we saw a change of \(\large\rm 6.25\) but from \(\large\rm 25\) to \(\large\rm 29.50\) we saw a change of \(\large\rm 4.50\). Uh oh, the space between the C(n)'s isn't staying constant, right?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.2So that makes B `not` true. Which automatically makes C `not` true because it's talking about a specific constant value.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.2For the function to be linear, `C(n) needs to have constant differences.` So what can you say about D?

KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0So if there not staying constant then its not true?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.2Correct :) So D must be `not` true as well.

KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0@zepdrix A. looks like it true?

KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0@zepdrix Yeah only A., now for something to be linear it has to be constant? In order to be a straight line. For this problem I think it would be C. because the average rates of change are not constant?
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