Solve the problem.During the first five months of the year, Len earned commissions of $3810, $2330, $3380, $2310, and $3420. If Len must have average monthly earnings of at least $3130 in order to qualify for retirement benefits, what must he earn in the sixth month in order to qualify for benefits?
A. at least $3530
B. at least $3050
C. at least $3063
D. at least $3130
Answer: A
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A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, an+1 = an + 2
A. 3, 5, 7, 9, 11 B. 1, 2, 4, 8, 16, 32 C. 1, 3, 5, 7, 9, 11 D. 1, 3, 5, 7, 9
Use Newton's Law of Cooling to solve the problem.A dish of lasagna is taken out of the oven into a kitchen that is 70°F. After 8 minutes, the temperature of the lasagna is 306.1°F. 16 minutes after being taken out of the oven its temperature is 253°F. What was the temperature of the lasagna when it was taken out of the oven? Round your answer to the nearest degree.
A. 390°F B. 360°F C. 425°F D. 375°F
Simplify the given expression. Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.2 - 4 cos2 2x
A. 2 cos 4x B. -2 cos 4x C. -2 cos 2x D. 4 cos 4x
Provide an appropriate response. Determine the mean age of a student in a technical mathematics class whose ages are: 42, 18, 19, 20, 23, 36, 18, 25, 20, 20, 24, 22, 26, 29, 37, 20, 20, 27, 42, 51, 24, 45, 24, 18, 31.
A. 27.2 B. 24 C. 20.7 D. 20