What is the difference between 4/5 and 3/8

Write an inequality for this sentence the quotient of a number and -5 increased by 4 is at most 8

What is the area of the shaded sector?

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.