Question

Suppose c and d vary inversely, and d = 2 when c = 17.

Answer 1

Given:
d = 2 
c = 17
a) 
Inverse equation is like this:

c = k/d

where k is the constant value.

17 = k/2
17 * 2 = k
34 = k

b) 

c = k/d
c*d = k
d = k/c
d = 34/68
d = 0.5

The value of d is 0.50

To check:

c = k/d
c = 34 / 0.5
c = 68