2. Concrete building blocks weigh 28 pounds each. Using \( b \) for the number of concrete blocks and \( w \) for the weight, write two equations that relate the two variables. One equation should begin with \( w= \) and the other should begin with \( b= \).

The polynomial function \( f \) is defined by \( f(x)=-3 x^{4}-7 x^{3}+3 x^{2}+9 x-1 \). Use the ALEKS graphing calculator to find all the points \( (x, f(x)) \) where there is a local minimum. Round to the nearest hundredth. If there is more than one point, enter them using the "and" button. \( (x, f(x))=\left(\prod_{1}, \square\right) \)

What is the difference? \( -2-(-7) \) Enter your answer as a number, like this: 42

Solve the equation. \[ \frac{14}{y}+\frac{26}{y}=5 \]

5. \( 3.51 \mathrm{~m} \bigcirc 35.1 \mathrm{~cm} \)

by the 16. Migher Order Thinking Three friends all live on the same street that runs west to east. Beth lives 5 blacks from Ann. Carl lives 2 blocks from Beth. fine street is represented by a number line and Anin's house is located at 0 , What are the passible lacations for Carl's house? Assume that each unit on the number line represents 1 block.