Answer:
f^-1(x) = (x² + 21)/7
Step-by-step explanation:
Since f(x) = y = √(7x – 21), to find the inverse of f(x) we have to write x in terms of y in order to make x the dependent variable and y the independent variable. The steps involved are:
Step 1: square both sides of the equation, y = √(7x – 21). Doing that, we have:
y² = 7x – 21
Step 2: Add 21 to both sides of the resulting equation. Doing that, we have:
y² + 21 = 7x
Step 3: Divide both sides of the equation by 7. Doing that we have:
x = (y² + 21)/7
Step 4: Replace x with f^-1(x) and y with x. Doing that, we have:
f^-1(x) = (x² + 21)/7
Answer:
$2479.02
Step-by-step explanation:
The invested amount is $2000 at a rate of 2.4% which compounds semiannually.
Therefore, the semiannual interest rate is 
%.
Then the principal is compounded (9 × 2) = 18 times within a period of 9 years.
If there is no withdrawal from the account, then after 9 years the sum will become
dollars {Rounded to the nearest cent} (Answer)
Answer:
<u>Bar graphs are used to compare things between different groups or to track changes over time.</u>
However, when trying to measure change over time, bar graphs are best when the changes are larger.
Step-by-step explanation:
Answer:
27
Step-by-step explanation:
14/2 + 5 * 4
Order of operations:
(14/2) + (5*4)
7 + 20 = 27
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Answer:
perez travels 390 miles. smyth 300 miles
Step-by-step explanation:
65 ×6 =390. 50 × 6 = 300
