Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 3x2 - 2 from x = 1 to x = 5; n = 4
A. 154
B. 140
C. 144
D. 150
Answer: A
Mathematics
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Write the word phrase as an algebraic expression. Use x to represent the unknown number in the phrase.15 more than the product of 3 and the difference between a number and 3
A. 15 + 3(x + 3) B. 15 + 3x - 3 C. 15 + 3(x - 3) D. 15 - 3x + 3
Mathematics
Determine whether the following number is prime or composite. If composite, write the prime factorization.385
A. composite, 35 ? 11 B. composite, 5 ? 7 ? 11 C. composite, 7 ? 7 ? 5 D. composite, 5 ? 5 ? 11
Mathematics
Use a commutative property to complete the statement.7x + 14 =
A. 14 + 7x B. 14x + 7 C. -7x + 14 D. 7x - 14
Mathematics
Find the indicated term.If a2 = -7 and a3 = 7, find a6.
A. 
B. 7
C. -1
D. -7
Mathematics