What is the answer for this question?

3

Step-by-step explanation:

If p-1 is a factor, then plugging in 1 for p will result in the expression being equal to zero.  Here is the work:

1^4+1^2+1-k=0

3-k=0

k=3

ha!

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18. g

20. h 30 degree turn.

21. d 90 degree angles

and also 19 is a. a sphere not a cirlcle

hope i !

pls mark me brainiest

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,