Perform the indicated operations.Estimate by rounding so that there is only one nonzero digit, then find the actual sum.850,639 + 4,629 + 53,021 + 883 =
A. Estimate: 851,200
Actual: 911,143
B. Estimate: 955,900
Actual: 909,172
C. Estimate: 965,903
Actual: 909,171
D. Estimate: 905,000
Actual: 909,352
Answer: B
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Find the average value of the function f over the given region.f(x, y) = 7x + 9y over the region bounded by the coordinate axes and the lines 
and 
.
A. 
B. 52
C. 26
D. 39
Convert the given interest rate to decimal form if it is given as a percentage, and to a percentage if it is given in decimal form.0.05% to decimal
A. 0.5 B. 5.0 C. 0.05 D. 0.0005
Factor out the variable that is raised to the smaller exponent.-5x-2 + x2
A. x-2(-5 + x-2) B. x-2(-5 + x4) C. x-2(5 - x4) D. x-2(-5 + x-4)
Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results.a = 7, b = 9, B = 49°
A. two triangles A1 = 76.01°, C1 = 54.99°, c1 = 7.60 or A2 = 103.99°, C2 = 27.01, c2 = 12.14 B. one triangle A = 35.94°, C = 95.06°, c = 11.88 C. one triangle A = 76.01°, C = 54.99°, c = 7.60 D. no triangle