Theo completed the following steps to simplify the expression -3((5 - a) - 2a(-3 + 4a)). -3(5) - 3(-a) – 3(-2a)(-3(-3) – 3(4a))
-15 + 3a + 6a(9 - 12a)
-15 + 3a + 54a - 72a2
Explain why Theo's solution is incorrect. Then show how to correctly simplify the expression.

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Two consecutive negative integers have a product of 30. what are the integers?