Question 18 of 50 A boy is 5 years old and his sister is twice as old. When the boy is 8 years old, how old will his sister
be?

His sister will be 13 yrs old

Step-by-step explanation:

twice as many as 5 is 10. so the sister is five yrs older than the brother. if you add 5 to 8, you get 13.

5 + 8 = 13

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

cheater

step-by-step explanation: