This summer, due to some renovations, a sports club has 105 members. The club's records indicate that this is 25% fewer members than it had last summer. How many members were there last summer?

140

Step-by-step explanation:

we know that this year the sports club has 25% less memeber, so if last year the members where 100% this year there are only 75%

and that 75% is equal to 105 members

we can represent the information that we are given in a table:

memebers       percentage

   105         ⇒        75%

since last summer there were the 100% of member we can represent the number of members from last summer with 'x', and the table now is:

memebers       percentage

   105         ⇒        75%

   x           ⇒        100%

and we use rule of three to solve this problem: multiply cross quantities (105 by 100) and divide by the remaining amount:

x = 105*100/75

x = 140

Last summer the sports club had 140 members

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.