1 square = 4 match sticks. 2 squares = 7 match sticks. 3 squares = 10 match sticks.
Let s represent the number of squares and m the number of match sticks. Which of these shows the rule for calculating the number of match sticks needed?
m=4s+1. m=4s. m=3s+1. m=s+3. m=4s+3.
I'm stuck between the 1st and 3rd one.
Please help!