John commutes each day to work either by train or by bus. The bus pass costs $10 plus $2 per trip. The train costs $15 plus $1.50 per trip. What is the most number of trips John can make before the bus costs more than the train? A) 10 trips
B) 11 trips
C) 13 trips
D) 15 trips

for any of you who need the translation here it is

step-by-step explanation:

find the angular size of the equatorial radius of the earth, if the horizontal parallax of the sun

step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints