Either A - the value of r would increase or B- the value of r would not change.
Jan's age =
years
Sister's age =
Step-by-step explanation:
Jan's age = x years
Sister's age = 2x years
Brother's age = 3x years
According to the given condition:
x + 2x + 3x = 29
6x = 29
x = 29/6
x =
years
2x = 
Therefore,
Jan's age =
years
Sister's age =
Answer:
C. S.A. = 340.8 
Step-by-step explanation:
Area of rectangles = 6x 12 = 72 
all three have the same area - 72 x 3 = 216 
Area of triangle = 10.4 x 12 ÷ 2
Since there are 2 trignles - 10.4 x 12 = 124.8 
Add all sides up
S.A. = 216
+ 124.8 
S.A. = 340.8 
Answer:
A is the answer you sent on the question on carton
80*x + 210 = 490 ;
80*x = 280 ;
x = 280÷80 ;
x = 3.50 ;