An open box is made from a 40 -cm by 50-cm piece of tin by cutting a square from each corner and folding the edges. the area of the resulting base is 1344cm squared. what is the length of the sides of the squares?

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

the answer is c 150

step-by-step explanation: