Which of the following numbers is divisible by both 3 and 9? a.7605 b.7690 c.5390 d.4524

A. 7605

Step-by-step explanation:

If a number is divisible by 9, it is also divisible by 3.

A number is divisible by 9 if the sum of its digits equals 9 or an integral multiple of 9.

A. 7605

7 + 6 + 0 + 5 = 18 (an integral multiple of 9) ; divisible by 9.

B. 7690

7 + 6 + 9 + 0 = 22 ; not divisible by 9

C. 5390

5 + 3 + 9 + 0 = 17 ; not divisible by 9

B. 4524

4 + 5 + 2 + 4 = 15 ; not divisible by 9

The only number divisible by 3 and 9 is 7605.

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

step-by-step explanation: