Sorry can't help, only in 7th grade....
3n-5=7
The three times a number goes first because there is the “less than” phrase.
Step-by-step explanation:
Length of rectangle = 4 * 3.5cm = 14cm.
Perimeter of rectangle = 2(14 + 3.5) = 35cm.
Area of rectangle = 14 * 3.5 = 49cm².
Multiply the length 7 tiles by the width of 2 tiles to get the area of 14 tiles
