What is the equation of the graph below?

The equation of the graph given is:

Step-by-step explanation:

Clearly from the graph of the function that is provided to us we see that the graph repeats itself after every 5π.

i.e. the period of the function is: 5π.

Now we will check in each of the given options whose period is 5π.

We know that the period of a cosine function of the type:

is given by:

1)

The period of this function is:

Hence, option: 1 is incorrect.

2)

The period of this function is:

Hence, option: 2 is incorrect.

4)

The period of this function is:

Hence, option: 4 is incorrect.

3)

The period of this function is:

        Hence, option: 3 is the correct option.

7. 153.86 ft

8. 12.56 ft

9. 78.5 m

10. 379.94 in

11. 132.665 m

12. 12.56 yd

13. 226.865 ft

14. 113.04 ft

15. 63.585 ft

16. 254.34 m

17. 50.24 cm

step-by-step explanation:

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step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent