(-1,-1)
y<-x+2
y<-2x-3

step-by-step explanation:

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

the answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.