Solve the equation algebraically. Verify your solution with a graphing utility.
+ 
= - 
A. 
B. 
C. 
D. 
Answer: B
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Determine which of the numbers below is a possible order of magnitude estimate of the quantity described.The total number of steps an adult would take in walking from New York to San Francisco.
A. One hundred million B. Ten million C. One billion D. One million
The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.16 psi, what is its altitude?
?
?
Please round your answer to the nearest foot.
?
__________ ft
Fill in the blank(s) with the appropriate word(s).
Solve the system.7x - 7y - z = -15 x - 3y + 9z = 1-3x + y + z = 1
A. (-1, 3, 2) B. (1, 3, 1) C. (1, 1, 3) D. (-1, 1, 3)
Solve the problem.The table below summarizes the construction cost of a set of homes (excluding the lot cost) along with the square footage of the home's floor space. Find a linear equation that relates the construction cost in thousands of dollars to the floor space in hundreds of square feet by finding the least squares line for the data.
A. y = 7.97x - 13.54 B. y = 7.87x - 13.08 C. y = 8.13x - 12.79 D. y = 8.13x