All real numbers such that y is greater than 3/17 or y>3/17. Hope this helps!!!!
Answer:
B. (negative infinity, -1)
Mr. chang paid the least because 10% off 25 is more than 20%off 30
$7.9 cost of one pack
10 packs cost is $79
She pays $29 + Voucher
From the total $79 we substract the $29 she paid with cash or card.
79-29=50
So the value of the voucher is $50
PS: celia should cut on chocolate. Not healthy for her :)
