Atrunk is rented at 40$ per day plus a charger per mile of use. the truck traveled 15 miles in one day & the total charge was $115 which equation can be used to find the charge x, in dollars per mile traveled?

40 + 15x = 115 <== ur equation
15x = 115 - 40
15x = 75
x = 75/15
x = 5the charge is $ 5 per mile traveled

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.