No it’s not. a quadratic formula has x^2 as the highest value(?). the highest exponent here is 3x^4. it’s called a quartic polynomial
Answer:
Given that,
R = 3x + 9y
Also, given that,
y = 6
R = 7
We have to find the value of x
For that, you can to put 6 and 7 to the equation instead of y and R respectively.
R = 3x + 9y
7 = 3x + 9 × 6
7 = 3x + 54
7 - 54 = 3x
- 47 = 3x

Hope this helps you :-)
Let me know if you have any other questions :-)
Answer:
I think it would be D
Step-by-step explanation:
20 x 3 = 60 60+35= 95 20/4 = 5