Step-by-step explanation:
h varies directly with v and inversely with the square of r.
1/pi is the constant of variation.
Answer:
2x² + 7x - 4
Step-by-step explanation:
(2x-1)(x+4)
= (2x)(x) + (2x)(4) + (-1)(x) + (-1)(4)
=2x² + 8x - x -4
=2x² + 7x - 4
