If you invest in $1600 at 5.25% for 18 months, how much simple interest is earned

$126

Step-by-step explanation:

P=$1600

R=5.25%

T=18/12=3/2

NOW

WE HAVE,

S.I=PTR/100

=(1600*3/2*5.25)/100

=25200/200

=$126

HENCE,$126 is earned.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i can't solve unless i know what the line is

step-by-step explanation:

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