Ax^2+bx+c=0
expanded, that is the x term
in
(ax+c)(dx+e), the coefient of the b term is cd+ae
so
(2x-1)(1x+5)
the b term is (-1)(1)+(2)(5)=-1+10=9
b is 9
Direct variation equation is y = kx where k is the constant of variation.
First use the x and y you are given to find the k.
9 = k * 2
9/2 = k
Then use the k and new x to find the y.
y = (9/2)(3)
y = 27/2
$105,882.35
18,000/? = 17/100
18,000/17 = 1,058.82 (+additional decimal places I didn’t include)
1,058.82 x 100 = 105,882.35
A=futurer amount
P=present amount
r=rate in decimal
n=number of times compounded per year
t=time in years
A=2500
r=0.05
n=2
t=2
divide both sides by [tex} 1.025^{4} [/tex]
2264.88=P
he should invest
$2264.88
