we are given

we can use vertex form parabola formula

so, we can complete x square




so, option-A........................Answer
The answer is 156.8. You can do 1.6 times 98
Answer:
c=l/--a^2+b^2=l/--45^2+20^2≈49.24429
Step-by-step explanation:
l/-- mean square root
^ means squared/ exponent
The range is 17 because the highest score (95) minus the lowest score (78) is 17