Carry out the mult.: f(x) = -[x^2 - 21x + 9x - 189]
Combine like terms: f(x) = -[x^2 - 12x - 189]
Eliminate the brackets [ ]: f(x) = -x^2 + 12x + 189
Identify coefficients a, b and c: a= -1, b=12, c=189
The equation of the axis of symmetry is x = -b/(2a), which here equals
x = -(12)/[2(-1)], or x = 6
This is also the x-coordinate of the vertex. Plug x=6 into the original equation to calculate the y-coordinate.
Answer:
$180
Step-by-step explanation:
there are 7.8 calories in a ounce tomato
540-35x= y
540 is the amount she has minus 35 and x is the weeks she withdrawn the money and y is the answer.
Answer:
11m-3v
Step-by-step explanation:
