Answer:
P = 40
Step-by-step explanation:
if half of P is equal to 20 then two halves would be 40 (20+20)
What do you need help with?
well it would have to be y=2x-3
yup
x=10 and x=-9
Factor:
(x-10)(x+9)=0
x-10=0
x=10
and
x+9=0
x=-9