You need to learn no to copy it kiddo
Answer:
a. 90 ft
Step-by-step explanation:
20+20+25+25
Since he lost 5 every month, it should be that the slope is -5, not 5, he is not gaining 5 every month
yint is 100 and slope is -5 would be correct
b=-5m+100
b=number of blocks he has after m months