solve this equation T=0.15(d-7550)+755

Question

lia uses the equation below to estimate the amount of taxes, T she owes to the government.

T=0.15(d-7,550)+755

lia estimates that she owes the government $3,455 in taxes.  What is d the total dollars lia earned during the past year?

Answer 1

my answer to this problem is $20,550