Simplify the expression. Assume that all variables are positive when they appear.
+ 4
+ 2
A. 6x
B. 31x
C. 6x
D. 31x
Answer: D
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Which of the tables below show linear data?Table 1 x 4 8 12 16 y 37.95 41.73 45.05 47.45? Table 2 x 4 8 12 16 y 35.36 39.14 42 44.86?
A. Table 1 only B. Table 2 only C. Both Table 1 and Table 2 D. Neither table is linear.
Find an equation of the line satisfying the conditions. Write the equation in slope-intercept form.Through (-3, 8); perpendicular to -3x + 4y = -23
A. y = x +
B. y = - x +
C. y = - x + 4
D. y = x + 12
Solve the problem.The first recorded population of a particular country was 30 million, and the population was recorded as 38 million 8 years later. The exponential growth function describes the population of this country t years since the first recording. Use the fact that 8 years later the population increased by 8 million to find k to three decimal places.
A. 0.880 B. 0.040 C. 0.030 D. 0.260
Identify the given number as "Rational", "Irrational", or "Not a real number". If the number is rational, give its exact value. If the number is irrational, give a decimal approximation to the nearest thousandth.
A. Irrational, -9.000 B. Irrational, -40.500 C. Rational, -9 D. Not a real number