Answer:
Jerry paid $500.50.
Step-by-step explanation:
30 / 100 = 0.3
0.3 x 715 = 214.5
715 - 214.5 = 500.5
round to the nearest hundredth
a.
x²+6x+9=0
x²+3x+3x+9=0
x(x+3)+3(x+3)=0
(x+3)(x+3)=0
either
x+3=0
x=-3
or
next method
x²+2×x×3+3²=0
it is in formula of (x+y)²
(x+3)²=0
x+3=√0