How do you solve for "r" in the literal equation "i=prt"

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

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 ?

Which equation is represented by the graph below?