What is the simplified form of the equation fraction 4 over 5 n minus fraction 3 over 5 equals fraction 1 over 5 n?

n = 1
n = −3
n = fraction 3 over 4
n = fraction 1 over 4

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points