42=2*3*7
35=5*7
their GCF is 7, so the cats and dogs must be split into 7 groups
42/7=6, and 35/7=5, so there are 6 dogs and 5 cats in each group.
121 ways because 11*11=121 and 11 is the amount of photos you have
Answer:

Step-by-step explanation:
1) 4(2a+p)=c+p+a
2) Expand: 8a+4p=c+p+a
3) subract a and 4p: 7a=c-3p
4) Divide: a=
That's a BIG increase in price! What cost $65 yesterday is now $156. What was the increase? $156 - $65 = $91.
Next: $91 is what fraction of $65? Divide. Answer: 1.4.
Finally, multiply this last result by 100%: 140% (answer)