Evaluate with calculater csc 1.3

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?