Answer:
k = 6
Step-by-step explanation:
If (x - 2) is a factor of f(x) then f(2) = 0
f(x) = x² + x - k , then
2² + 2 - k = 0
4 + 2 - k = 0
6 - k = 0 ( subtract 6 from both sides )
- k = - 6 ( multiply both sides by - 1 )
k = 6
Answer:
pervious prices is $4.8 per pound
Step-by-step explanation:
current price is $6 per pound
previous price is 20% less than current price
20% of 6
6 × 20 ÷ 100 = $1.2
$6 - $1.2 = $4.8
The answer would be 55.
Since it is 5 days from Monday to Friday. You would have to do 11 points times 5.
Y = x^2 - 2x + 4 . . . (1)
8x + y = 20
y = 20 - 8x . . . (2)
Equating (1) and (2), x^2 - 2x + 4 = 20 - 8x
x^2 - 2x + 8x + 4 - 20 = 0
x^2 + 6x - 20 = 0
x = 2.39 or x = -8.39
y = 0.88 or y = 87.12
