Madelyn simplified the expression 3(4y) + 6 + 2y using the following steps:
3(4y) + 6 + 2y
v
12y + 6 + 2y
v
12y + 2y + 6
v
14y + 6
which property did she use in simplifying?
-commutative property of multiplication
-commutative property of addition
-associative property of multiplication
-associative property of addition

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t