Posted by jen on Saturday, May 26, 2012 at 12:16am.
if lisa studies for 9 hours and gets a score of 75. How long would she have to study to get a score of 94

algebra  Steve, Saturday, May 26, 2012 at 5:16am
assuming a linear relationship, we can say she gets a score of 75/9 for each hour she studies. So, if we let
94 = 75/9 * h
h = 11.28
so, if she studies 11.28 hours, she will get a 94.
Of course, there are lots of other ways to do this; the problem is woefully underspecified. Suppose she gets a score of 48 with no studying at all. Thus, she gets 3 points per hour for studying. She will thus need 34/3 = 11.33 hours to get a 94.
Answer This Question
Related Questions
 algebra  Lisa studies 8 hrs. for a particular test and gets a score of 78. at ...
 Math  Lisa studies for 7 hours for a particular test and got a score of 71, how...
 math  lisa studies 9 hrs. for a test and gets a score of 72. at this rate, how ...
 PreCalc Help please?  The more you study for a certain exam, the better your ...
 math  The sum of Lisa's and Jack's scores on there first algebra test is 6 less...
 statistics  Calculate the zscore for each set of data. Determine who did ...
 algebra  Which situation would most likely be represented by a negative ...
 programming  would someone be able to give me an idea of how to start coding ...
 Statistics  Some IQ scores are standardized with a mean of 100 and a standard ...
 Math_Statistics  Some IQ scores are standardized with a mean of 100 and a ...
More Related Questions