Answer:
I think it's 72cm
Step-by-step explanation:
add 4 to 68
45% - 144
100% - x
/cross multiply/
45x = 144·100
45x = 14400 |divide both sides by 45
x = 320
Answer: 45% of 320 is 144.
The quadratic function when graphed out should look like either a 'U' or an 'n' (parabola). Quadratic functions have formulas which are typically in the form of: A(x^2)+Bx+C where A, B, C are numbers and if you plot them then as mentioned before you should get a parabola.
