Answer:
Step-by-step explanation:
hello :
y=9×+5
y=9×-7
9x+5 = 9x-7
5=-7 false .....no solutions
610 $............................................................................................................................
5c+3b=29.99
3c+7b=32.71
15c+9b=89.97
15c+35b=163.55
26b=73.58
b=2.83
c=4.30
Answer:
30
Step-by-step explanation: