need two numbers. no explanation needed

Suppose we collect data for a group of students in a machine learning class with variables x1= hours studied , x2= undergrad GPA, and y= receive an A. We fit a logistic regression and produce estimated coefficient w^0=8,w^1=0.06, and w^2=0.91. Estimate the probability that a student who studies for 45 hours and has an undergrad GPA of 3.27 gets an A in the class. P(y=1x1=45,x2=3.27) How many hours would this student need to study to have a 50% chance of getting an A in the class