Answer:
11) 14 and 11
Step-by-step explanation:
i can't help in number 12 , sorry !
20+x = 12+2x is the answer and x=8
Answer:

Step-by-step explanation:
When two or more quantities have the same exponents, their bases can be multiplied together.
Given:
Joining fee = $28
Fee of each event = $4
To find:
Total cost for someone to attend 4 events.
Solution:
Let the number of events be x and total fee be y.
Fee for 1 event = $4
Fee for x events = $4x
Joining fee remains constant. So, the total fee is

Substitute x=4 in this equation.



Therefore, total cost of 4 events is $44.
Answer:
The answer is C, 488 cm2
Step-by-step explanation: