Concept explainers
A salesperson makes a base salary of $ 15,000 a year phus an 8% commission on sales for the year. The total salary can be expressed as a linear equation ( See Example7.)
Y = 15,000 + 0.08x
- What is the salesperson’s salary for a year in which his sales total $ 500,000?
- What is the salary for a year in which sales total $ 300,000?
- What does the −intercept mean in the context of this problem?
- Why it unreasonable to use negative values for x in this equation?
Example 7
Interpreting the x- and y-intercepts of line.
Companies and corporation are permitted to depreciate assets the have a known useful life span. This accounting practice is called straight-line depreciation. In this procedure the useful life span of the asset is determined, and then the asset is depreciated by an equal amount each year until the taxable value of the assets is equal to zero.
The J.M Gus trucking company purchases a new trunk for $65,000. The trunk will be depreciated at $13,000 per year. The equation that describes the depreciation line is
Y = 65,000 − 13,000x
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Intermediate Algebra
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- Assume {u1, U2, 13, 14} spans R³. Select the best statement. A. {U1, U2, u3} never spans R³ since it is a proper subset of a spanning set. B. {U1, U2, u3} spans R³ unless one of the vectors is the zero vector. C. {u1, U2, us} spans R³ unless one of the vectors is a scalar multiple of another vector in the set. D. {U1, U2, us} always spans R³. E. {U1, U2, u3} may, but does not have to, span R³. F. none of the abovearrow_forwardLet H = span {u, v}. For each of the following sets of vectors determine whether H is a line or a plane. Select an Answer u = 3 1. -10 8-8 -2 ,v= 5 Select an Answer -2 u = 3 4 2. + 9 ,v= 6arrow_forwardSolve for the matrix X: X (2 7³) x + ( 2 ) - (112) 6 14 8arrow_forward
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