Answer:
<h2><em><u> 42.8 in</u></em></h2>
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

<em><u>After 4 years the depth will increase by 42.8 in</u></em>
Answer:
800
Step-by-step explanation: 75 x 8
Answer:
well if she has 52 notions and 16 patterns you will have to multiply
Answer:
From his starting point of 85 3/4, he descended 17 9/20 meters
Step-by-step explanation:
We want to know how much farther he went down from his starting point.
103 1/5 - 85 3/4
S
tart off by making the denominators of both the numbers the same.
103 1/5 - 85 3/4
103 4/20 - 85 15/20
Make them into improper fractions
2064/20 - 1715/20 = 349/20
Make 349/20 into a mixed fraction
17 9/20