Which number supports the given conjecture?

if the sum of the digits of a number is divisible by 9, then the number is also divisible by 9.

a.
19

b.
54

c.
87

d.
109

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

The solution set for 5v2 – 125 = 0 is

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}