10. - In order to save money for prom this weekend, Kenny is going to walk his neighbor's dog for $12 per hour and wash cars for $16 per hour. His mother told him he can work no more than 10 hours in order to
keep up with his homework. If Kenny would like to make at least $70 to cover prom expenses, help him
determine combinations of hours he can work between these two jobs.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

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