
Quadratic formula is

'a' is the coefficient of x^2 = 4
'b' is the coefficient of x = 2
'c' is the constant = -1
Now we plug in all the values in quadratic formula



The above one is the substitution of values of a,b,c in quadratic formula.
Answer:
8-d , 9-c ,and i cant see 10
Step-by-step explanation:
this is just what i know off of what i've learned
Step-by-step explanation:
9 = a7 + b
-2 = a9 + b
b = 9-7a and b = - 2-9a
9 - 7a = - 2-9a
2a = - 11
a = - 5.5
b = 9 - 5.5*7 = - 29.5
y = -5.5x - 29.5
Looks good to me but I’m not the best at math. Sorry I couldn’t be a huge help.
Answer:
the 30$ service fee is the independent
Step-by-step explanation:
because it doesn't rely on hours worked. and it's a separate fee.