Use order of operations or ----> PEMDAS
(9.2-4.9÷7) +36.4
first divide -4.9 by 7 in the parenthesis.
9.2-0.7+34.6
now add -0.7 and 34.6
9.2+33.9
now add these numbers together and your answer is.... 43.1
The answer to the question is b
Net profit from selling one t-shirt=(8-3.5=$4.5)
so
P=4.5x-5