# Algebra Questions Solution - MATH Questions Show...

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MATH QuestionsShow work/explanation where indicated.1. (4 pts) Which of these graphs represent a one-to-one function?Answer(s): ____A______(no explanation required.)(There may be more than one graph that qualifies.)(A)(B)(C)(D)
2. (6 pts) Students in a math class took a final exam (with a grade scale of 0 to 100) and then took equivalentforms of the exam at monthly intervals thereafter. The average gradegaftertmonths was found to be given bythe functiong(t) = 786.5 ln(t+ 1),t(Note that "ln" refers to the natural log function)(explanation optional)Using the model,(a) What was the average grade when the students initially took the exam, whent= 0?0.0
(b) What was the average grade on the exam when taken 3 months later, to the nearest integer?
3. (4 pts)Convert to a logarithmic equation: 6x= 1296.(no explanation required)__x6
4.(8 pts)Solve the equation.Checkall proposed solutions.Show work in solving and in checking, and state yourfinal conclusion.
when x=−313x=1xLHS=13(3)=13+3=16=±4RHS=1x=1(3)=1+3=4it’ s evident that LHS=RHS(4=4)Thereforex=−3isa valid solutionx=4isan entraneoussolution

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