You and your friend go to dinner and your total bill is $30. You are both part of the rewards club and have coupons. Your coupon
1 answer:
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Answer:
-3
Step-by-step explanation:
we khow that the vertex form of a function is written this way :
f(x)=a(x-h)²+k
- the coordinates of the vertex are (h,k) so from the graph we can deduce that k = -3
