When solving the equation, which is the best first step to begin to simplify the equation? = 2(x+3) = -10
O (-2)(-2)(x+3) = -10(-2)
0-3-2)(x+3) --10(-4
03(x+2) = -10
03(x+3) ---10

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.