Solve the problem.Suppose that R ={(x, y): 0 ? x ? 4, 0 ? y ? 4}, and P is the partition of R into four equal squares by the lines x =2 and y = 2. 
approximate 
dA, by calculatiang the Riemann sum 
, assuming that 
are the centers of the four squares.
A. 320
B. 1280
C. 640
D. 140
Answer: C
Mathematics
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Solve the initial value problem.
= 4 - 2x, y '(0) = 8, y(0) = 2
A. y = 4x2 + 2x3 + 8x + 2
B. y = 2x2 + 
x3 - 8x - 2
C. y = 2
D. y = 2x2 - 
x3 + 8x + 2
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Find fractional notation for the ratio. You need not simplify.A baseball team has played 9 games so far this season. The team won 2 games. Find the ratio of games lost to games won.
A. 
B. 
C. 
D. 
Mathematics
Evaluate the sum.
A. 20 B. 21 C. 16 D. 22
Mathematics
Find the union.{c, d, e, f, g} ? {f, g, h, i, j}
A. ? B. {c, d, e, h, i, j} C. {c, d, e, f, g, h, i, j} D. {f, g}
Mathematics