
Concept explainers
(a)
To evaluate: given expression
(a)

Answer to Problem 15E
Explanation of Solution
Given information:
Given expression
Calculation:
We want to evaluate
Because there are no parentheses, evaluate the exponent first, and then multiply by
By the definition of exponential notation, which states that
We can say that
Now, put this back into our original expression and we get,
(b)
To evaluate: the given expression
(b)

Answer to Problem 15E
Explanation of Solution
Given information:
Given expression
Calculation:
Because of the parentheses, the power is applied to
The expression simply represents
(c)
To evaluate: given expression
(c)

Answer to Problem 15E
Explanation of Solution
Given information:
Given expression
Calculation:
Consider the expression
Here, we will again use the definition of exponential notation. Recall that this states
Expand the expression into the multiplication it represents.
Chapter 1 Solutions
EBK PRECALCULUS: MATHEMATICS FOR CALCUL
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- 6.9x y= 100-x a. Find the cost of removing each percent of pollutants: 50%; 70%; 80%; 90%; 95%; 98%; 99%. 50% y = 70% y = 80% y = 90% YF 95% y = 98% y= 99% V =arrow_forwardThe cost per ton, y, to build an oil tanker of x thousand deadweight tons was approximated by 215,000 C(x)= x+485 C(25) C(100) C(300) =1 C(50) = = C(200) = C(400) =arrow_forwardi need help pleasearrow_forward
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