If the price of paint rises, we can expect the: quantity of paint demanded to increase. demand for paintbrushes to decrease. en quantity of paintbrushes demanded to remain unchanged.

Find the exact value of the following expression. \[ \cos ^{-1}(1) \]

What is \( |5| + |3| \)?

Find each function value and the limit for \( f(x)=\frac{3 x^{3}-6 x^{2}}{6 x^{4}+3} \). Use \( -\infty \) or \( \infty \) where appropriate. \( \begin{array}{lll}\text { A) } f(-6) & \text { (B) } f(-12) & \text { (C) } \lim _{x \rightarrow-\infty} f(x)\end{array} \)

\( ( \frac { T _ { 2 } \operatorname { Cos } \alpha } { \operatorname { Cos } \beta } ) \operatorname { Sen } \beta + T _ { 2 } \operatorname { Sen } \alpha - 160 k = 0 \)

\( \frac { 7 m } { T - 2 } + \frac { T ^ { 2 } } { T ^ { 2 } - 4 T + 4 = 0 } \)