Question

Observe the given graph and determine the number of street lights that can be powered from 5 solar panels.

• A. 15
• B. 20
• C. 25
• D. 30

Answer 1

The correct option is C 25

We can see that the number of street lights depends on the number of solar panels.

Tabulating and extending the pattern of values from the graph, onto a table, we get,

No. of solar panels (x)	1	2	3	4	5
No. of street lights (y)	5	10	15	20	25

By observing the pattern, we can write that:
No. of street lights = 5 x Number of solar panels

Now, the number of solar panel = 5
∴ Number of street lights = $5\times 5=25$