Answer:
50
Step-by-step explanation:
2(5)^2=2(25)=50
Answer:
The answer is 20s+10h=500
Step-by-step explanation:
The reason is because 20 times 20=400 and then 10 times 10= 100 then you add those together and get $500
Answer:

Step-by-step explanation:
4 = ½[6] + b
3

I am joyous to assist you anytime.
Amar's age = a
sister is a - 5
add both = 39
a + (a - 5) = 39
2a - 5 = 39
2a = 44
a = 22 and sister is 17