Answer:
4.05
Step-by-step explanation:
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☁️ Answer ☁️
So I got:
-2.9d + 4.6h - 14
Hope it helps.
Have a nice day hyung/noona!~  ̄▽ ̄❤️
Let c and d be the number of cds and dvds respectively.
c+d=12
c=12-d
The we are told that:
2c+3d=31, using c found above in this equation gives you:
2(12-d)+3d=31
24-2d+3d=31
24+d=31
d=7
So Phillip bought 7 dvds.
check...
3*7+2(12-7)=31
21+2(5)=31
21+10=31
31=31