PreCalculus Problems

That's a question my pretty pretty which seasoned A2Kers might pass by on account of you being so recently emerged from the shell.

Think these through

1) What is a reciprocal? What is the reciprocal of (X+2)? Once you have that set it equal to (X-2) & combine to get an expression in some form of X.---Hint= there are 2 possible solutions.

2) On an X-Y coordinate space the standard form of a line is y=mx+b & a horizontal line has no slope (m=0). So take your expression in x, y, & q and put it in the standard form of a line and determine the q where the slope is 0. Hint if you've written it correctly the solution of q is a limit.

3) Pick two variable for the time in urbanity and the time on the highway. The total time of the trip is the sum of these two variables, The total distance traveled is the sum of the products of the travel speed and the time spent at those speeds (one is the speed in urbanity times the time in urbanity). The second part of this question gives a relation between these two variables.. Hint don't forget units

4) The box?-making the assumption that the box has no top, I'd recommend drawing this one out on paper?-call the cutout your variable?-take the 60 by 80 piece of cardboard and cut off of the four corners a square with a side equal to this variable and fold up the sides to make an open box. Now what is the volume, base times width times height right? Then think about what these three dimensions are. Now for the second clue?-the volume is 5 times the volume of a cube the height of the flat box?-think about the dimension of the height of the box you drew on the paper and equate these two pieces of information. Now you have the expression you can solve using algebra. Hint: you'll get two answers but only one will make sense.

Rap

See what I mean my leetle chickadee.

sorry im not quite understanding what you're talking about.. could u explain it through?