For this case we have the following expression:

Rewriting the expression we have:

Where,
x: exponent to which we must raise the expression to obtain 7 as a result.
We have then:

The exponent must be equal to 1:

Clearing x we have:

Substituting valres:
Answer:
you must raise the expression to 2
Answer: There are 2 batteries which he can buy with his earnings .
Step-by-step explanation:
Since we have given that
Selling price of cans at the recycling center = $0.40 per pound
Number of pounds of cans he sold on Monday = 16.2
Number of pounds of cans he sold on Tuesday = 11.8
Total earning of Samuel is given by

Now, cost of battery =$5.60
So, number of batteries he can buy is given by

So, there are 2 batteries which he can buy with his earnings .
Independent Variable is the lightning, while your location is the dependent. because the lightning doesn't depend on where you are to occur yet your location does for you to hear/see it
Answer:
1. 2.6
2. 29.1
3. 2490
4 3.4
Step-by-step explanation: