Can someone lend me a hand?

how many fourths are in 3/4

answers are in the picture below.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?