I think it's a although I can't really tell.
B = 7
7 x 6 = 42
42 + 6 = 48.
Let lucy = l & neighbour= n
l = n +4
l + n= 14 years
substitute l with n +4
(n +4) + n = 14
2n +4 =14
n=5 years
l = n + 4 lets substitute n with 5
l = 5 + 4
lucy = 9 years
Answer:
3
Step-by-step explanation: You divide 45 and 60 then you mutiple the number by 4 then find your answer after you done solved this is how you solve it 45 divided by 60=0.75 mutiply by 4=3
squaring something multiplies it by itself. -4^2 = -4*-4 = 16