Answer:
Rs 448
Step-by-step explanation:
400 × 1.12 = 448
this a 12 % increase
a) y = 4.5
y intercept is where the line crosses the y axis. so y must be 4.5
7/2
x = 15
x/3/9 = 5/9
x : 3 : 9 = 5/9
x×1/3×1/9 = 5/9
x/27 = 5/9
x = 5×27/9
x = 5×3
