Solve the system of equations by the substitution method.
A. (7, 2)
B. (-8, 2)
C. (8, 1)
D. no solution
Answer: C
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Use the multiplication property of equality to solve the equation. -6x = -42
A. -36 B. -7 C. 36 D. 7
Solve the problem.A woman borrowed $30,000 at 2% interest compounded annually. If the loan was paid off in one lump sum at the end of 6 years, how much did she pay?
A. $33,784.87 B. $33,600.00 C. $3784.87 D. $30,600.00
Solve the problem.Halley's comet has an elliptical orbit with the sun at one focus. Its orbit shown below is given approximately by 
In the formula, r is measured in astronomical units. (One astronomical unit is the average distance from Earth to the sun, approximately 93 million miles.) 
Find the distance from Halley's comet to the sun at its greatest distance from the sun. Round to the nearest hundredth of an astronomical unit and the nearest million miles.
A. 5.57 astronomical units; 518 million miles B. 11.36 astronomical units; 1057 million miles C. 295.68 astronomical units; 27,498 million miles D. 5.68 astronomical units; 528 million miles
Determine the slope and y-intercept of the function.p(x) = -x - 10
A. m = -1; b =-10 B. m =1; b = 10 C. m = 0; b = -10 D. m = -1; b = 10