Answer:
k = 4
Step-by-step explanation:
Given that a varies directly as b then the equation relating them is
a = kb ← k is the constant of variation
To find k use the condition a = 8 when b = 2
k =
=
= 4
Answer:
20 gmaes in all
Step-by-step explanation:
14/x = 70%
x = 14/70%
Answer:
347
Step-by-step explanation:
2(3) + 210 = 216
2(3) + 125 = 131
216+131 = 347
Answer:

Step-by-step explanation:
The dimensions of the rectangle are represented by functions:

The area is length × width of a rectangle.


Expand brackets and solve.


The 11 may represent the price of the magazine if all the magazines at a certain store are $11. Then the s may represent the price of a book because all the books at a bookstore are different prices.
Hope this helps