Karen bakes cookies. She has observed that the number of cookies that turn out well in each batch varies with the size of the batch and is given by the function f(x) = 2x – 23, where x is the size of the batch (number of cookies in each batch). She never bakes fewer than 12 cookies in a batch. If the size of five batches is {20, 25, 26, 27, 34}, how many cookies turn out well in each batch?

Answers Choices
{17, 27, 29, 31, 45}
{18, 24, 26, 30, 46}
{14, 23, 25, 31, 42}
{20, 24, 25, 26, 44}

Question

Karen bakes cookies. She has observed that the number of cookies that turn out well in each batch varies with the size of the batch and is given by the function f(x) = 2x – 23, where x is the size of the batch (number of cookies in each batch). She never bakes fewer than 12 cookies in a batch. If the size of five batches is {20, 25, 26, 27, 34}, how many cookies turn out well in each batch?

Answers Choices
{17, 27, 29, 31, 45}
{18, 24, 26, 30, 46}
{14, 23, 25, 31, 42}
{20, 24, 25, 26, 44}

anonymous · Answer

@satellite73

anonymous · Answer

too many words
why not 
"evaluate $f(x)=2x-23$ for the following values of $x$:  {20, 25, 26, 27, 34}

anonymous · Answer

you really only have to do 1 to get the correct answer, since all of them are different 
compute$$f(20)=2\times 20-23$$ and you will be done

anonymous · Answer

so you mean like 2(20)-23=17

anonymous · Answer

oh yea lol didnt see you put that but okay thanks