When x number of units are sold, the price of each unit (in dollars) is given by  p = -x/2 + 75.?
538653
Just put each number in for x and see what the answer is.  Example : -11/2 + 75 = -5.5 + 75 = $69.50 a unit.
822906
Solve the equation:\n\n(Price increase)/(Original Price) x 100\n\nPlugging in our values, you get:\n\n(122776 - 1682)/(1682) x 100\n\nSolving for x, you get x = 7200% increase\n\n------------\n\nHope this helps
905537
Price + tax = Selling Price\n\nP + r% of P = SP\nP(1 + r/100) = SP\nP = SP/(1 + r/100)
249879
Take $30.00 and subtract $.10 ($29.90)\nThen figure 80% of that, and the cost is the answer ($23.92)
734961
Obviously you meant that p was the price before sales tax and $6.35 was the price *after* sales tax.  If so, your equation is correct:\n\np + 0.06p = 6.35\n\nDistribute out the common p:\n(1 + 0.06)p = 6.35\n(1.06)p = 6.35\n\nDivide both sides by 1.06:\np = 6.35/1.06\n\nJust plug this in your calculator, or multiply numerator and denominator by 100 and use long division:\np = 635/106\np = 5.99\n\nAs a double check:\n$5.99 * 0.06 = 0.36, so the total price would be $6.35.\n\nThe item cost $5.99 before 6% tax was added.
963947
assuming you meant:\nP=2(L-W)\nthen\nP/2 = L-W\nand so\nL= W+ P/2\n[
849026
$271.00 x (0.40%) = $108.40\n\n$271.00 - $108.40 = $162.60 \n\nit's ok :) we all have brain farts
931316
(-0.242+2.18-1.94)*10^-18\n=(-0.002)*10^-18
1153180
Write them as a ratio of integers (cents) first:\n1250 / 875\n\nRemove a common factor of 5 from top and bottom:\n250 / 175\n\nRepeat for another 5:\n50 / 35\n\nOops, we can do it again:\n10 / 7\n\n(Note: this is equivalent to 1.428571... in decimal, so the previous answer was right about this, but the problem asked to do it as a ratio of whole numbers.)\n\nSo the ratio of the prices is 10 / 7.
716921
0.009 \n\n0.018 \n\n0.027\n\n0.036
1162372
120\nx.25\n------\n3000\n\n~~move decemal point over two places so the answer is 30.00 or can be written 30~~
877862
From one Big Daddy to another:\n\n.75(x) + .9(40 - x) = .78(40)\n.75x + 36 -.9x  = 31.2\n-.15x = -4.8\nx = 32\n\nThus, they should use 32L of the 75% mixture, and 8L of the 90%.
715515
Profit- P(x)\n\nP(x) = R(x) - C(x)\nP(X)= 20x - .001x^2 - 2500 - 10x\nP(x)= 10x - .001x^2 - 2500\n\n\nWe have our equation, let's differentiate it (i'll use the shortcut and the power rule to speed things up).\n\nP'(x) = 10 - .002x\n\nThe zeroes of this will be local extrema of the original equation.  Since there is a negative sign in front of the .001x^2, that flips the parabola upside down and it will be the maximum point.\n\n0 = 10-.002x\nx=5000\n\nPlug this into the cost equation:  2500 + 10(5000) = 2500 + 50000 = 52500.\n\nHope this helps.
163830
(Sq. Ft.) x (Price Per Sq. Ft.) = (TOTAL)
519289
let the original price be x\nx * 20/100 =12590\ntherefore.. x=12590*5\n=\n62950\n\ni didnt notice the extra f in "off" .. i took it as "of".. \nstill m not goin to edit my answer
177543
If you are getting 25% off, then you are paying 75% of the original price.  100% original price - 25% discount = 75% sale price.\n\nSo .75*670.95 = $503.21
209966
Set up an equation:\n\n72 = .6 * X\n\n72/.6 = X\n\nX = 120