GRADE 9 MATHS EXAM SET 4.
DURATION: 1 HOUR.
1. Solve the following indices:
a. 36x−7 =243
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b. 2p1/3=8
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2. A woman invests $5000 in an investment scheme for 5 years and earns 8%
per annum compound interest.
i.
Calculate the amount she will earn.
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ii.
Determine the compound interest after 5 years.
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3. Solve the following equations:
i.
2x+7=3x+4
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ii.
4x−9= −21
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iii.
3(2x−5)
5
=
𝑥+1
2
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iv.
−3(x−6) =−6
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4. How much will you have in the bank if you invest $500 for 4 years at 4%
interest rate compounded monthly.
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5. Solve for x
i.
x−1=3−2
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ii.
3x−1=27
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iii.
2x(2x) = 16
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BEST WISHES!!!