Holly was given $5 000 by her parents for savings towards college. She invested part of the money in a government bond that paid 6% simple interest every year, and the rest in a bank account that paid 3% simple interest each year. After one year, the investments had earned a total of $225. How much was invested in each plan?

2500 x 1.06 + 2500 x 1.03

Step-by-step explanation:

2500 x 1.06 = 150

150 x .5 (half the simple interest) = 75

150 + 75 = 225

32

step-by-step explanation:

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.