10 Complete the sentences. Use the information in Ex. 24 on page 12. 1. Martin is optimistic about the future because... 2. Isabel is afraid of the future because... 3. Phil doesn't care about the future because... 4. Helen is looking forward to the future because...

d) \( \cos \theta=0.5 \)

A company decides to begin making and selling computers. The price function is given as follows: \[ p=-50 x+2300 \] where \( x \) is the number of computers that can be sold at a price of \( p \) dollars per unit. Additionally, the financial department has determined that the weekd) fixed cost of production will be 7000 dollars with an additional cost of 100 dollars per unit. (A) Find the revenue function in terms of \( x \). \( R(x)=\square \) (B) Use the financial department's estimates to determine the cost function in terms of \( x \). \( C(x)=\square \) (C) Find the profit function in terms of \( x \). \( P(x)=\square \) (D) Evaluate \( P^{\prime}(x) \) at \( x=250 \). \( P^{\prime}(250)=\square \)

3. Para el siguiente patalelepipedo con coordenadas \( A(+2,+2), B\left(+6{ }^{2}\right. \) \( c(+6,+5), D(+2,+5), \epsilon(+8,+7), F(+4,+7), G(+4,+4) \) y \( H(+8,+4) \), grapicar en plano cartesíano. calcular distancias de lados, perimetro, area y volumen.

a) ¿Cuánto costará pintrarla? b) ¿Cuántos litros de agua serán necesarios para llenarla? c) Si se quiere revestir con cerámica solo las paredes, ¿cuántos metros cuadrados harán falta?

c) \( \sin \theta=1 \)