Solve the problem.Big "D" Sales1989-1990 MonthWhat was the increase in sales between month 5 and month 6 of 1990?

A. $4000
B. $4
C. $800
D. $8000

Answer: A

Mathematics

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Graph the integrand and use areas to evaluate the integral.

A. 30
B. 45
C. 90
D.

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Mathematics

Solve the problem.Suppose A0dollars is deposited in a savings account paying 6.5% interest compounded continuously. After x years the account will contain dollars. If $270 is initially deposited, after how many years (to the nearest tenth) would the account have $2490 in it?

A. 1.4 B. -34.2 C. 34.2 D. 120.3

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Mathematics

Find all rational zeros of f. Then (if necessary) use the depressed equation to find all roots of the equation f(x) = 0.f(x) = x4 + 3x3 - 7x2 - 7x + 2

A. {-1, 3, -2 + , -2 - }
B. {1, -2, -2 + , -2 - }
C. {-1, 2, -2 + , -2 - }
D. {-1, -2, -2 + , -2 - }