Which one of the following is NOT true? a. (a + b)2 = a² + 2ab + 62
b. a² + 4a +4 = (a + 2)2
c. a? – 2ab + b2 = (a - b)?
d. a? – 6ab – 962 = (a - 36)2
e. (3a + 2b)2 = 9a² + 12ab + 4b^2

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?