To be eligible for the senior admission rate, a visitor must not be less than 55 years old. Use y to represent the age (in years) of a visitor who gets the senior rate.

y ≥ 55

Step-by-step explanation:

Hi, to answer this question we have to write an inequality with the information given:

Visitor must not be less than 55 years old.

So, “must not be less than 55” means a visitor age must be greater than 55 or equal to 55 to get the senior admission rate.

y ≥ 55

Whree "y" represents the age (in years) of a visitor

Feel free to ask for more if needed or if you did not understand something.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490