The exchange rate for Hong Dollars is US$/HK$ = 12.81¢ (cents) (i. e. 0.1281). How many US dollars will it cost to purchase a hard drive priced at HK$ 390? Be sure to indicate US$ as the currency unit in your answer.

It would costs US$ 3,044.5 to purchase a hard drive priced at HK$ 390.

Step-by-step explanation:

We have that

This means that 1 US dollars is worth 0.1281 HK dollars.

How many US dollars will it cost to purchase a hard drive priced at HK$ 390?

This can be solved by a simple rule of three.

1US$ - 0.1281 HK$

x US$ - 390 HK$

It would costs US$ 3,044.5 to purchase a hard drive priced at HK$ 390.

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

7

step-by-step explanation: