D. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.
The EASIEST way to do it, is actually start with the form a(x-b)(x-c) or intercept form since you have intercepts
x ints at (0,0) and (4,0) so y=ax(x-4)
sub in (2,-4) it doesn't really matter whether or not its a vertex
-4=2a(2-4)
a=1
so y=x(x-4)
expand to get y=x^2-4x which is y=ax^2+bx+c form where a=1, b=-4, c=0
Answer:
The answer is 1st point
Step-by-step explanation:
x = -4 x = 1 x = 6
(x+4) = 0 (x-1) = 0 (x-6) = 0
(x+4)(x-1)(x-6) = 0
(x²-x+4x-4)(x-6) = 0
(x²+3x-4)(x-6) = 0
x³-6x²+3x²-18x-4x+24 = 0
x³-3x²-22x+24 = 0
Answer:
3 hours and 20 minutes
Step-by-step explanation:
Jack's rate is 1 puzzle for every 5 hours, so his rate per hour is 1/5 of a puzzle per hour.
We need to find the rate of his brother so here is our equation,
1/5 + 1/x = 1/2
1/2 - 1/5 =1/x
3/10 = 1/x
3/ 3x = 3/10
3x=10
x= 3 and 1/3 hours
3 hours and 20 minutes
2 + 2 = 4
4 + 6 = 10
10 + 10 = 20
20 + 65 = 85
85 + 96 = 181 :)
