Use the equation $y=1+\sqrt{x}$ to answer the following questions.

(a) For what values of x is y = 4?

(b) For what values of x is y = 0?

(c) For what values of x is y ≥ 6?

(d) Does y have a minimum value? A maximum value? If so, find them.

Explain how networking can be used to one's advantage in career planning.

Use the equation $y=x^2-6 x+8$ to answer the following questions.

For what values of $x$ is $y=-10$?

Sketch the graph of the function g(x) = x + |x|.

Mars has a radius of 3,397 km at its equator. Find its circumference.

Choose the word or words that best complete the sentence. Glaciation carved long, narrow, steep-sided inlets called __________ in the coast of Norway. A. polders B. dikes C. fjords D. rivers

A crane lifts a pallet of concrete blocks 8 feet from the back of a truck. The truck drives away and the crane lowers the pallet 13 feet. What is the final position of the pallet relative to where it started in the back of the truck?

Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.

$$\left\{\begin{aligned} x-y+z &=-4 \\ 2 x-3 y+4 z &=-15 \\ 5 x+y-2 z &=12 \end{aligned}\right.$$

Figure 18.100 is a top view of a portion of a circuit containing three identical light bulbs (the rest of the circuit including the batteries is not shown). The connecting wires are made of copper. The compass is placed on top of the wire, and it deflects $20^o$ away from north as shown (the wire is underneath the compass). In what direction are the electrons moving at location $P_1$? How do you know?

Let f(x) = 3x + 1 and

$$g ( t ) = t ^ { 2 } - 2 t + 1$$

. Find the value. f(r + 8)

How is a chronic health problem different from getting the flu or spraining a toe? Give examples of chronic health problems.

Find the points of discontinuity of $f ( x ) = \left| x ^ { 3 } - 2 x ^ { 2 } \right|$, if any.

Most of the energy that powers ocean waves and ocean currents ultimately comes from the sun. Describe how ocean waves and ocean currents transfer solar energy around the globe.

Write true if the statement is true. If it is false, change the underlined word or words to make the statement true. Photosynthesis is the process by which primary producers use sunlight to convert $\underline{\text{oxygen}}$ and water into sugar.