-2x+14 is the same as 14 - 2x
Let's say you started off with $14. If you want to buy a soda worth $2, then you have 14-2 = 12 dollars left. If you buy two sodas, then you spend 2*2 = 4 dollars with 14-4 = 10 dollars left.
In general, buying x sodas will cost you 2*x dollars and you have 14 - 2x dollars left over. The x is simply a placeholder for a whole number. For example, if x = 3, then...
14 - 2x = 14 - 2*3 = 14 - 6 = 8
meaning buying 3 sodas cost you $6 and you have $8 left over.
If y is the amount left over, then we can say y = 14 - 2x which is equivalent to y = -2x+14
note: graphing this equation will go through the two points (0,14) and (7,0) as shown in the image below. A graph is handy to help see various points on the line. Each point represents the amount of sodas you can buy (x) and the amount left over in your pocket (y). Keep in mind that neither x nor y can be negative, so it only makes sense to restrict the graph.
A cleaner charges $50 per hour and has cleaned 5 hours, made 9 extra dollars worth of tips.Count the amount of money she made (x stands for hours)
y = 150 + 9
y - 159
Same thing wit heverything, srry but it will take a lot of time for more than 1 and isn't for giving answers for a lot of same thing- it's for learning on an example so I hope you understand why i didn't do the other ones.
Done! Hope you learned how to do this/understood this and have a great day!
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The first equation is
Let Tom has $10 in his purse. If earn 6 dollars per hour, then the amount in his purse is defined by the equation
The second equation is
Let Oliver has 14 candies. he share these candies with his friends. If he give 2 candies to each friend, then the number of remaining candies is defined by the equation