HELP ASAP PLSS I WILL MAKE U BRAINLIEST
A man is climbing down from 100 feet high descending 30 feet per minute. Write an equation in slope-intercept form that models this situation.

note: descending means going downward

A) y = - 30x + 100

B) y = 100x + 30

C) y = 100x - 30

D) y = 30x + 100