Is that the right equation?
The balance B at the end of time t is given by
B = P +Prt
8250 = 6000 +6000*r*12.5 . . . . substitute the given information
2250 = 6000*r*12.5 . . . . . . . . . . .subtract 6000
2250/(6000*12.5) = r . . . . . . . . . .divide by the coefficient of r
r = .03 = 3%
Clint earned 3% annual simple interest on his savings.
The polynomial x3+8 is equal to (x+2)(x2-2x+4)
The polynomial with those roots would be:
<span>y = (x + √5)(x - √5)(x - 3) </span>
<span>▬▬▬▬▬▬▬▬▬▬▬ multiply this out to get </span>
<span>y = (x² - 5)(x - 3) </span>
<span>y = x³ - 3x² - 5x +15</span>
