I'm pretty sure that it's b. That's assuming that you find the negative of b^2 and not the square of negative b.
Answer:
55 mph
Step-by-step explanation:
220m per 4 hours
so 220 devieded by 4 gives u your answer
Average rate= change in alt / change in time
r=-378/7=-54ft/min
Answer:
196 
Step-by-step explanation:
Surface are of 2 rectangles = 2(2*4) = 16 
surface are of the base rectangle = 4*3 = 12 
Area of tow triangles =2(
* 2* 2)= 4
total = 16+12+4
= 196 