Frank and Chris has total number of stamps equals to 8x+8. Option D is correct.
Frank has X stamps.
Chris has 8 more than 7 times the number of stamps Frank has i.e. =7x+8
In mathematics it deals with numbers of operations according to the statements.
Here,
Total number of stamps = x+ 7x+8
=8x+8
Thus, Frank and Chris has total number of stamps equal to 8x+8.
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