n office starts at \( 10 \mathrm{a} . \mathrm{m} \). and closes at \( 5 \mathrm{p} . \mathrm{m} \). with a lunch break of 45 minute tween. Find the ratio of: lunch break to the total time spent in the office. lunch break to the actual working hours.

1. Решить уравнение: 1-x \( =3 \)

Найти уравнене асимпот и эксиентиситет пиперболы \( 9 x^{2}-4 y^{2}=144 \)

Gugulethu plans to purchase a car that depreciates (loses value) at a rate of \( 14 \% \) per year. The initial cost of the car is R258400. Which equation represents the value, \( v \), of the car after three years?

Question 2 \( \begin{array}{l}\text { The ratio of women engineers to men engineers in a construction } \\ \text { company is } 3: 8 \text {. There are six women engineers. How many men } \\ \text { engineers are there? }\end{array} \)

The equations of three quadratic functions are: (i) \( y=2 x^{2}+12 x+18 \) (ii) \( y=-3 x^{2}-5 x+3 \) (iii) \( y=x^{2}+2 x-5 \) Determine the discriminant of each function and the number of \( x \)-intercepts that each parabola has. Choose the correct statement. The function described in