Question

. The values of the US dollar (x) and a foreign currency (y) vary directly according to the formula: y = 2.5x How many units of the foreign currency would someone receive in exchange for 150 US dollars?​

Answer 1

Given:

The values of the US dollar (x) and a foreign currency (y) vary directly according to the formula:

$y=2.5x$

To find:

The number of units of the foreign currency would someone receive in exchange for 150 US dollars.

Solution:

We have,

$y=2.5x$

Substitute x=150 in the given formula.

$y=2.5(150)$

$y=375$

Therefore, 375 units of the foreign currency would someone receive in exchange for 150 US dollars.