Express (158 lb)^2 to three significant figures with appropriate units. Does anyone know why the answer is 25.0*10^-3 kip^2 instead of 25.0*10^3 lb^2?

Question

(158 lb)^2=24954lb^2 and in three significant figure itequals 25.0*10^3 lb^2 right?

Answer 1

158^2 = 24964 = 25000 lb^2 = 2.50*10^4 lb^2
but
1 kip = 10^3 lb
so
1 kip^2 = 10^6 lb^2
2.50* 10^4 lb^2 * 1 kip^2/10^6 lb^2 = 2.50 * 10^-2 kip^2
which is 25.0 * 10^-3 kip^2
BUT the correct way to write that is with ONE digit left of the decimal point
2.50 * 10^-2 :)

Answer 2

Expand −58(3p+8).(1 point)
Responses

−158 + 3p
−158 + 3p

3p + 8
3p + 8

−158 p−5
−158 p−5

−15p + (−40)