Can tou me solve this problem 8×(9-5)+8^2

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

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.

Need showing work for this problem 56.25 ×25.80