Calcola il valore delle seguenti espressioni. \( 3\left[\left(\frac{1}{3}\right)^{3} \cdot\left(-\frac{1}{3}\right)^{5} \cdot\left(-\frac{1}{3}\right)^{2}\right]^{3}:\left[-\left(-\frac{1}{3}\right)^{7}\right]^{4}-\left(-\frac{1}{3}\right)^{2}-\left(-\frac{3}{13}\right)^{4} \cdot\left(\frac{13}{9}\right)^{4} \)

sketch the following araph, labelling bey features with exact co-ordinates: \( y=2^{x-1}+3 \)

(c) Expand and simplify. \[ (x+2)(x-2) \]

1.2 Afer the investigation, designing, making and evaluation of the model circull, what will the next step be?

A grocery store estimates that the revenue (in dollars) from the sale of \( x \) cases of condensed soup is given by \( R(x)=-5,600+9.4 x-0.0014 x^{2} \). Use the differential to approximate the change in revenue from the sale of one more case of soup when 1,100 cases are sold.

The library has 840 magazines. Each bin holds 14 magazines. How many bins does the library need to hold all of its magazines?