Answer:
D.
Step-by-step explanation:
" Sum" means "+".
The sum of the number of dogs and the 6 cats.
d + 6
Option D
Sum is Adding (+)
So,
The expression becomes
=> d+6
m∠RUT=1/2 m∠RST
=1/2(68)
=34°
m∠RUT=34°
144
161 postage stamps
simply plug in 18 for p, since there are 18 pages
t = 35 + 7 (18)
t = 35 + 126
t = 161