Write the phrase as a variable expression. Use x to represent "a number."The difference of a number and 76
A. 76x
B. 76
C. x - 76
D. 76 - x
Answer: C
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Solve the problem.Suppose that y is directly proportional to x and that y = 3.5 when x = 7. Find the constant of proportionality k. Then, find y when x = 14.
A. k = 0.5; y = 7
B. k = 0.5; y = 5.6
C. k = 1.5; y = 5.6
D. k = 24.5; y = 
Expand and simplify the given expression by use of Pascal's triangle.
3
A. 
x6 + 
x3 + 64
B. 
x3 + 
x2 + 16x + 64
C. 
x3 + 
x2 + 64
D. 
x3 + 
x2 + 16x + 64
Convert the Indo-Arabic numeral to the indicated form.100; Mayan
A. 
B. 
C. 
D. 
Provide an appropriate response.The intensity of an earthquake is measured on the Richter scale by the formula Richter scale rating = log
, where I0 is the measure of the intensity of a very small earthquake. Find the Richter scale rating of an earthquake having intensity 100,000I0.
A. 5 B. 12 C. 4 D. 11