7-y-y=-1 what is the answer to this?

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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 ?