Step-by-step explanation:
∑k=150(3k+2)
First find a1 and a50 :
a1=3(1)+2=5a20=3(50)+2=152
Then find the sum:
Sk=k(a1 + ak)2S50=50(5 + 152)2=3925
Car B because 334 divided by 5= 41 mph
Answer:
-1
Step-by-step explanation:
Slope= rise/run
Since the line is decreasing, it will be negative.