Determine if the relation illustrated is a function. Give the domain and range of the function or relation.three times a number 
A. function
domain: {4, 8, 12, 16}
range: {12, 24, 36, 48}
B. function
domain:{12, 24, 36, 48}
range: {4, 8, 12, 16}
C. not a function
domain:{12, 24, 36, 48}
range: {4, 8, 12, 16}
D. not a function
domain: {4, 8, 12, 16}
range: {12, 24, 36, 48}
Answer: A
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Find the required ratio.The percent grade of a road is the ratio of the vertical rise to the horizontal change in distance, expressed as a percentage. If a highway rises 
for each 
along the horizontal, what is the percent grade to the nearest hundredth?
A. 0.16% B. 0.25% C. 6.33% D. 3.95%
Combine like terms. 12k + 6(4 - 7k)
A. 5k + 24 B. -30k + 24 C. 54k - 24 D. 30k - 24
Decide whether the given number is a solution to the equation preceding it.(x - 7)2 = 64; -15
A. Yes B. No
Solve the formula for the specified variable.S = 2?rh + 2?r2 for h
A. h = 2?(S - r)
B. h = S - r
C. h = 
- 1
D. h = 