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Jenny 112 have a possible 148 points on a test she lost four points for each incorrect answer how many incurred answers does she have

Respuesta :

                                                                   she has nine incorrect answers
calculusxy
148 - 4x = 112 (this means that for every question x four points were taken off from the total of 148 points and it equals to 112) 

Solve for x ... 
148 - 4x = 112
148 - 148 - 4x = 112 - 148
-4x = -36
x = 9

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