The total length of wire she needed is 2090 inches of wire
The expression for the amount of wire needed for a robot is: Amount of wire needed for 1 robot = length of wire for body + length of wire for remote control
<em><u>Solution:</u></em>
Number of robots = 3
Given that, Each robot includes a body and a remote control
Length of wire for each body = 450 inches
Length of wire for each remote control = 120 inches
Also, she is going to build one master remote
Length of wire for master remote = 380 inches wire
<em><u>To find: Total length of wire needed</u></em>
Total length = Number of robots(Length of wire for each body + Length of wire for each remote control ) + Length of wire for master remote
Thus we get,
Thus the total length of wire she needed is 2090 inches of wire
<em><u>Write an expression for the amount of wire needed for a robot</u></em>
Each robot includes a body and a remote control
Amount of wire needed for 1 robot = length of wire for body + length of wire for remote control
Amount of wire needed for 1 robot = 450 + 120 = 570
Thus one robot requires 570 inches of wire