4. Mr. Gomez is giving his science class a test. The test has 30 questions and will count for 100 points. Some questions are worth 3 points and the others are worth 4 points. Which of the following systems could be used to determine the number of three point questions, t, and the number of four point questions, f? Af+t= 30 4t + 3f = 100 %3D Bf = 30 – t 3t + 4/ = 100 € f = 100=t 3t + 4f = 30 Df =t-30 3t + 4f = 100 %3D

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