1 point 9. You and your friend decide to go to Red Robin to eat. You are both part
of the rewards club and receive coupons in the mail. You have a coupon a
coupon for 10% off the total bill. Your friend has a coupon for $5 off the
total bill. Which coupon should you use to save the most money if the total
bill was $29.90? *
A. the $5 off coupon
B. the 10% off coupon
O C. either one
D. cannot be determined

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Step-by-step explanation:

up

step-by-step explanation:

the orientation of the parabolas can easily be found by analysing the power of x and y and their signs. if x is squared , parabola opens up and also if its coefficient is negative it opens down. if y is squared , the parabola opens right and also if its coefficient is negative it opens left. however in order to do the above analysis our equation must be in standard form .

our parabola is

which is not standard form of any parabola . hence we square on both hand side and convert it into standard form.

hence we see that x is squared and its coefficient is non negative . there for it opens up.

answer:  

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step-by-step explanation: easy