Solve the problem.A voltage source of 12 volts can supply a voltage V (in volts) through a
line to a variable resistance R (in ohms) given by the following equation.
How fast does V change with respect to R when R is 
A. 6.496 V/?
B. 0.049 V/?
C. 0.167 V/?
D. 0.232 V/?
Answer: B
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Solve.y = x2 - 10x + 25y = -x + 11
A. (5, 6) B. (2, 9), (7, 4) C. (-2, 13), (-7, 18) D. (2, 13), (7, 4)
Solve for y.10y + x2 = x + 8
A. y = x + 8 - x2
B. y =
C. y =
D. y = x2 - x - 8
Solve.When Maria finished medical school she had a student loan. She repaid $27,000 of the loan within two years of graduating. That was of the total amount she owed. Write and solve an equation to determine the total amount, x, of the student loan.
A. 27,000 ? = x; $24,300
B. 27,000 ? = x; $54,000
C. 27,000 = x; $24,300
D. 27,000 = x; $54,000
Solve the problem.The distance d in miles that can be seen on the surface of the ocean is given by where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of
A. 756 ft B. 130 ft C. 420 ft D. 114 ft