Simplify.1.1 ÷ 2 + 8 × 0.2 - 0.52
A. 4.2
B. 101.9
C. 1.2
D. 1.9
Answer: D
Mathematics
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Solve and graph the solution set on a number line. Express the solution set in both set-builder and interval notations.|3x - 3| + 7 < -1
A. 
B. ?
C. 
D. 
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 8x2 - 4, x ? 0
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = - 
D. f-1(x) = 
Mathematics
Write the standard form of the equation of the circle.The endpoints of a diameter are (3, 6) and (7, 6).
A. (x + 5)2 + (y + 6)2 = 4 B. (x + 5)2 + (y + 6)2 = 2 C. (x - 5)2 + (y - 6)2 = 2 D. (x - 5)2 + (y - 6)2 = 4
Mathematics
Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
A. 729 B. 621 C. 823.5 D. 594
Mathematics