Solve the formula for the specified variable.
- 
+ 
= 5 for x
A. y = 
B. x = 
C. z = 
D. x = 
Answer: D
Mathematics
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Translate to a proportion and solve. Round to the nearest hundredth, if necessary.21 is what percent of 50?
A. 0.42% B. 4200% C. 4.2% D. 42%
Mathematics
Find the vertex, the focus, and the directrix of the parabola.(x + 3)2 = 4(y - 2)
A. V: (-3, 2); F: (-3, 3); D: y = 1 B. V: (2, -3); F: (2, -2); D: y = -4 C. V: (-3, 2); F: (-3, 1); D: x = 3 D. V: (3, -2); F: (3, -1); D: y = -3
Mathematics
Evaluate the function at the indicated value.Find f(x + h) when f(x) = 
.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x-8y)7
A. 
B. 
C. x56y7
D. 
Mathematics