Determine if the relation is a function. Assume x is the independent variable.y = 
+ 1
A. Yes
B. No
Answer: A
Mathematics
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Evaluate the expression for the given value or values.
, for y = -30, z = 5
A. -6 B. 6 C. -5 D. 5
Mathematics
Solve the problem.At what interest rate must $4700 be compounded annually to equal $9305.68 after 14 yr? (Round to the nearest percent.)
A. 5% B. 7% C. 4% D. 6%
Mathematics
Solve the problem.The cross section of a piece of a roller coaster having a width of 260 feet and a depth of 125 feet is depicted below.
What is the equation of this parabola?
A. y = 
x2
B. y = 
x2
C. y = 
x2
D. Not enough information
Mathematics
Solve the problem.From a distance of 50 feet from the base of a building, the angle of elevation to the top of the building is 63°. Estimate the height of the building to the nearest foot.
A. 45 feet B. 98 feet C. 25 feet D. 23 feet
Mathematics