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Online Quiz (
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Grade 7 - Mathematics
3.10 Word Problems - Exponents - 2
Example:
If 2
^{x}
=15, find the value of 2
^{x+3}
?
Solution:
2
^{x+3}
= 2
^{x}
.2
^{3}
Substitute 2
^{2}
=15 in the above, we get
= 15.2
^{3}
=15.2.2.2
=15.8
=120
Directions:
Solve the following problems. Also write at least ten examples of your own.
Q 1
: If 4
^{x}
=9, find the value of 4
^{x+1}
?
Answer:
Q 2
: If 4
^{x}
=160, find the value of 4
^{x-2}
?
Answer:
Q 3
: If 9
^{x}
=8, find the value of 9
^{x+3}
?
Answer:
Q 4
: If 5
^{x}
=15, find the value of 5
^{x+3}
?
Answer:
Q 5
: If 7
^{x}
=16, find the value of 7
^{x+0}
?
Answer:
Q 6
: If 3
^{x}
=45, find the value of 3
^{x-2}
?
Answer:
Question 7: This question is available to subscribers only!
Question 8: This question is available to subscribers only!
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