please help
1.Which portion of the expression is the coefficient?5y^6
2.Mallory makes $10 per hour babysitting and $8 per hour working at the local grocery store. Last week she babysat for 6 hours. Her total gross earnings for both jobs was $180. How many hours did she work a
t the grocery store?
3.Auston's office is 360 square feet. Calculate the area of his office in square yards.?

Question

please help 
1.Which portion of the expression is the coefficient?5y^6
2.Mallory makes $10 per hour babysitting and $8 per hour working at the local grocery store. Last week she babysat for 6 hours. Her total gross earnings for both jobs was $180. How many hours did she work a
t the grocery store?
3.Auston's office is 360 square feet. Calculate the area of his office in square yards.?