Can sum 1 pls help me its due tonight

Nine more than four times a number is the same as one less than twice the number. find the number?

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

Iam at home. /: i am playing video games. translate the following statement into symbolic form.