Hey I’m in class but it is fine to help a friend so that answer is 1350
The answer is b and i know that cause just david’s
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
#3
A(x) = 1000(1+.17)x
because the 17 percent would have to be changed to a decimal form
