What number is
of 8,000,0007
what number is 10 times as much as 507
what number is 10 times as much as 3.0007
what number is of 30,0007

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Can someone me with my math problem pls my teacher is on my back about this

Acredit union pays 5% annual interest, compounded daily, on saving deposits. find the value after one year of $500 deposited in this account. a-$20.40 b-$25.64 c-$520.40 d-$525.64