The number of students in a school club increased from 40 to 44. By what percent did the number of students in the club increase? Round to the nearest whole percent.

10%.

Step-by-step explanation:

Given:

The number of students in a school club increased from 40 to 44.

To find:

By what percent did the number of students in the club increase?

Solution:

First of all we will find by how much the number of students increased.

In the past, number of students in a club  = 40

At present, number of students in a club = 44

Increased in number of students = 44 - 40 = 4

Now, we will find percent increased in the number of students in a club.

Increased in number of students divided by In the past, number of students in a club multiplied by 100

Thus, the number of students in a club increased by 10%.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value