Vertex form is basically commplete the square
y=a(x-h)^2+k
y=x^2+14x+4
take 1/2 of 14 and square it, (7^2=49)
add that and its negative to right side
y=x^2+14x+49-49+4
factor perfect squaer
y=(x+7)^2-49+4
y=(x+7)^2-45
answer is A
% increase = 100 - 85
--------- * 100
85
= 17.65
= 18 % to nearest per cent
Answer:
3 times larger
Step-by-step explanation:
10 to 30
is a 300% increase
58 I just took the test and got it right
Answer:
11.9
Step-by-step explanation:
390=290e^(.025x)
x=11.85 which rounds to 11.9
