[tex]\text{We have exprassion 3.25c+5.75p where c - cakes, p - pies. We know that baker}\\\text{sold 10 cakes and 15 pies. It means that c=10 and p=15. Now we just put}\\\text{it into expression}\\3.25\times10+5.75\times15=32.5+86,25=89.75\\\text{89.75 is near to 90 so we can round up it}\\89.75\approx90\\\text{Answer: C) \$90}[/tex]
