The depth y (in inches) of a lake after x years is represented by the equation y=0.2x+42 . How much does the depth of the lake increase in four years

42.8 in

Step-by-step explanation:

Step one:

given data

we are told that the expression for the depth of a lake after x years is given by

Required

The value of y when x= 4

Step two:

substitute the value of x in the expression to get y

After 4 years the depth will increase by 42.8 in

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.