If there are 100 levels on the video game and he completed 72% 72% of 100 = 72 to put in a fraction we need to convert it into a decimal which means move the decimal 2 places to the right which .72 then to convert to fraction it is Seventy Two Hundredths which is equal to 72/100 Hope this helps!
The discriminant is b<span>²-4ac We can rewrite x</span>² = 4 to x<span>² + 0x - 4 = 0 So a = 1, b = 0, c = -4 </span>Δ = 0 - 4 * 1 * -4 Δ = 16 The answer is B