What is the unit value of the three in 432

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.