Use the given values of the variables to find the value of the expression.-3x - 8y - 4a for x = -2, y = 3, a = 2
A. -22
B. -17
C. -26
D. -1
Answer: C
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Find the limit of the sequence if it converges; otherwise indicate divergence.an = 9 + (0.8)n
A. 9.8 B. 9 C. 10 D. Diverges
Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 2.5 inches of rain occurred in 1959; the maximum of 9.7 inches of rain occurred in 1938.What is the approximate average annual rainfall over the last 80 years?
A. 4.3 inches B. 5.2 inches C. 3.2 inches D. 6.1 inches E. none of these
Add or subtract. Assume that variables represent nonnegative values.-5
+ 3
- 2
- 7
A. -7
- 4
B. 7
- 4
C. -7
+ 4
D. 7
+ 4
Solve.x2 = 49
A. 24.5 B. 7 C. ±7 D. ±8