(a) Matthew wants to sell laptops and smartphones. Each laptop is sold for the same amount of money, and each smartphone is sold for the same amount of money. He wants
to sell at least 12 total devices and make at least $4500 to cover expenses and turn a profit. Laptops sell for $425 and Smart Phones sell for $125.
Let x = number of laptops.
Let y = number of smart phones.
a) Create an inequality for the number of devices. It can be modeled as the following:
number of laptops plus number of smart phones is at least twelve.
b) Create an inequality for the amount of money earned from the sales. It can be modeled as the following:
Sales ($) of laptops plus sales ($) of smart phones is at least 4500.
c) Graph in Desmos and select all the ordered pairs that are true:
(b)
A (11,0)
B (11,4)
C (12.1)
D (10,1)