1. (1 point) Suppose I want to estimate the mean math SAT score for all Rutgers un- dergraduates. In order to do this, I stand in Hill Center with a clipboard and ask passersby for their math SAT scores. What is this type of sampling called? Why is this probably a bad idea?

a. \( \frac{1}{3}= \)

3b) Find the value of \( u \) so that the expression \( (-3 x-2) 8 \) is equivalent to \( 8(-3 x+u) \).

19. Be Precise A 100 -watt solar power panel usually costs \( \$ 146 \). They are on sale for 0.75 of the regular price. Multiply 146 by 0.75 to find the sale price.

1. \( (\operatorname{sen} \alpha+\cos \alpha)^{2}+(\operatorname{sen} \alpha-\cos \alpha)^{2}=2 \)

Find the solution of the exponential equation, as in Example 1 \[ 3^{x-1}=27 \] \( x=\square \)