Solve.If an I-beam is to be 
in. with a tolerance of ± 
in., find the longest and shortest acceptable lengths.
What will be an ideal response?
Longest = 
in.
Shortest = 
in.
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Write the given iterated integral as an iterated integral with the order of integration interchanged.
A. 
B. 
C. 
D. 
Find the vertex of the quadratic equation's graph and determine whether the graph opens up or down.y = x2 + 3x + 6
A. 
, down
B. 
, down
C. 
, up
D. 
, up
Solve the problem by writing and solving a suitable system of equations.A shopkeeper orders 54 pounds of cashews and peanuts. If the amount of cashews he orders is 
less than the amount of peanuts, how many pounds of peanuts did he order?
A. 27 pounds B. 42 pounds C. 21 pounds D. 33 pounds
Find the percent. Round to the nearest tenth of a percent.What percent of 3050 sycamores is 20 sycamores?
A. 16.6% B. 0.7% C. 15,250% D. 6.6%