P=2l+2w
150(2)+170(2)
300+340
640 m
Answer:
(a) Increased by 100%
(b) Increased by 50%
(c) Decreased by 33.33%
(d) Decreased by 50%
(e) Increased by 200%
(f) Decreased by 66.67%
Step-by-step explanation:
In this question, we can use the following <em>formula</em>:

Positive value of percentage change means increase and
Negative value of percentage change means decrease.
Solution a)
Old Value = 1
New Value = 2
Increase of 100%
Solution b)
Old Value = 2
New Value = 3

Increase of 50%.
Solution c)
Old Value = 3
New Value = 2

Decrease of 33.33%.
Solution d)
Old Value = 2
New Value = 1

Decrease of 50%.
Solution e)
Old Value = 1
New Value = 3

Increase of 200%.
Solution f)
Old Value = 3
New Value = 1

Decrease of 66.67%.
So, the answer is:
(a) Increased by 100%
(b) Increased by 50%
(c) Decreased by 33.33%
(d) Decreased by 50%
(e) Increased by 200%
(f) Decreased by 66.67%
Answer:
y = -16
Step-by-step explanation:
x - 3 = -19
-19 + 3 = -16
Answer:
length = 7.5 cm
Step-by-step explanation:
Volume of rectangular box = 60 cubic cm
length * width * height = 60
length * 4 * 2 = 60
length * 8 = 60
length = 60/8 = 7.5 cm