S=2(4x+2x)+4x^2=4x^2+12x
4x^2+12x=7
4x^2+12x-7=0
D=12^2-4x4x(-7)=256
X1=(-12-16)/(2x4)=-3.5 impossible
X2=(-12+16)/(2x4)=0.5
A
The key word product tells us we need to multiply. The key word increase tells use we need to add and the key world is means we need to use an = sign
9x + 4 = 58
9x + 4 - 4 = 58 -4
9x = 54
9x / 9 = 54 / 9
x = 6
So the answer is 6
C. x = 7 that is the answer
25 is equal to 20% of 125
As the increase is 75 (200-125), you've then got to divide the increase by each part to find out how many times it increases.
75/25= 3
20*3= 60
Therefore, there is an increase of 60%
Hope this helps :)