Answer: The solution is (4, -4) 
 
        
             
        
        
        
Answer: 20 feet perimeter is the largest allowed
Step-by-step explanation:  width=2.5 length=no more than 3x2.5
so find longest possible length allowed...
2.5x3=7.5
calculate largest perimeter allowed...
2(7.5+2.5)=20
 
        
             
        
        
        
Step-by-step explanation:
he has 900-230 = 670 more push-ups to do in the remaining 20 days.
so, he has to do every day
670/20 = 67/2 = 33.5 push-ups.
fractions of push-ups don't make sense.
we cannot say, he has to do at least 33 per day, because then he might come short in the end (if he sticks to the low limit) .
so, we have to say he has to do more than 33 or at least 34 push-ups per day to be sure he will at least reach his goal.
p > 33
or
p >= 34
both should be correct in the context of using only whole numbers.
bur in case of doubt I would pick p >= 34.
 
        
             
        
        
        
Segment DF is 1/2 the length of Segment DE. Since the entire segment is DE and it's midpoint is at F, the segment would be broken into 2 equal segments in one. Segment DF and FE. Segment DF is congruent to Segment FE.
        
             
        
        
        
The options can be rewrited as follow:
A. 5<4
B. 5<5 
C. 5<4 
D. 4<-5 
∴ Answer is none of the above. 
Unless perhaps you have written down the question incorrectly.