Riley has (8p+7) one-dollar coins and (2p+5) one-dollar bills. Pam has 7p dollars fewer than Riley. How much money does Pam have? Answer in terms of p. If p=6, how much money will Pam have after she gives half her money to Riley?

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Answer 1 · 2018-06-22T00:02:58

#10p + 12#dollars
#3p + 12 #dollars
#15 # dollars

First we just add up all of Riley's dollars in terms of p.

#8p + 7 + 2p + 5 = 10p + 12#dollars

Pam has 7p less:
#10p + 12 - 7p = 3p + 12 #dollars

If p = 6, then she has a total of#18 + 12 = 30 # dollars

Giving half away leaves her with #15 # dollars