College Math CLEP Prep Practice Exam

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The equation y=6x-4 is graphed on a coordinate plane. What is the y-intercept of the line?

  1. 2.9

  2. 4.6

  3. 3.2

  4. 5.3

The correct answer is: 4.6

The correct answer is B. When solving for the numerical value of ln20, we need to use the logarithm rule that states ln(a) + ln(b) = ln(a*b). In this case, ln20 = ln(5*4) = ln5 + ln4. Since we are given that ln5 = 1.6, we can substitute this value in the equation to get ln20 = 1.6 + ln4. To find the value of ln4, we can use the same logarithm rule and simplify it to ln4 = ln(2*2) = ln2 + ln2. However, we are not given the value of ln2, but we can use ln(2) = 0.6931 (calculated previously). So ln4 = 0.6931 + 0.6931 = 1.386

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