3. Jackson is Black Friday shopping for a new 12 volt convertible to cruise the streets after nap time. He finds 2 deals: Walmart: 40% off with $12.99 shipping.

Amazon: 35% off with free shipping.

Write a function for each deal for the price of the car after the discount, d(p), where p is the full price of the car. No shiping or taxes

Sales tax on products is currently 8%. Write a function for each deal for the price of the car, t(d), after taxes and shipping, given the discounted price, d.

Write a composition function, t[d(p)], for each deal, for the price of the car after taxes and shipping, given the full price of the car.

If the full price of car was $250, where should Jackson purchase it? Justify your answer.

its 4 because 2 times 2 is 4, if you double the number two you get four

answer: haha (: i’ll go see what it is

step-by-step explanation:

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.

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step-by-step explanation:

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