Mrs. lim is y year old. she was 25 year old when her son was born. their total age in 12 years’ time will be n years.
a) express n in terms of y
b)find n when y=38

let x be the age of her son

y = 25 + x

y - 25 = x

(y + 12) + (x + 12) = n

y + x + 24 = n

y + y - 25 + 24 = n

2y - 1 = n

sub

2(38)-1 = n

n = 78

the histogram that represents the data with the largest spread is data set b

answer:

um why

explanation: