Mathematics 30 June 1999 Grade 12 Diploma Exam
Mathematics 30 June 1999 Grade 12 Diploma Exam
Mathematics 30 June 1999 Grade 12 Diploma Exam
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Use the following information to answer the next question.<br />
The partial graphs of f (x) = 1 + 3 log 2 x and g(x) = 4 – log 2 x are shown<br />
below. The graphs intersect at point A.<br />
y<br />
7<br />
y = f(x)<br />
6<br />
5<br />
4<br />
3<br />
2<br />
A<br />
y = g(x)<br />
1<br />
1 2 3 4<br />
x<br />
–1<br />
–2<br />
–3<br />
18. Based on the information above, the x-coordinate of point A can be determined<br />
by solving<br />
A. 3 log 2 x + 1 = 0<br />
B. 4 – log 2 x = 0<br />
C. log 2 x = 5 2<br />
D. log 2 x = 3 4<br />
11