Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find [H3O+] if the pH = 3.4.
A. 4.0 × 10-4
B. 2.5 × 10-3
C. 4.0 × 10-3
D. 2.5 × 10-4
Answer: A
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Use the two steps for solving a linear programming problem to solve the problem.Wally's Warehouse sells trash compactors and microwaves. Wally has space for no more than 79 trash compactors and microwaves together. Trash compactors weigh 31 pounds and microwaves weigh 129 pounds. Wally is limited to a total of 6000 pounds for these items. The profit on a microwave is $53 and on a compactor $22. How many of each should Wally stock to maximize profit potential? Let x represent the number of trash compactors and y represent the number of microwaves.
A. 34 trash compactor(s) and 45 microwave(s) B. 0 trash compactor(s) and 45 microwave(s) C. 46 trash compactor(s) and 34 microwave(s) D. 2 trash compactor(s) and 46 microwave(s)
Determine whether the graph of the function is symmetric about the y-axis, the origin, or neither of these.f(x) = 2x5 - 3x3
A. y-axis B. Origin C. Neither
Solve the problem.A 5-foot tree casts a 13-foot shadow and creates a right triangle, as shown. At the same time, a nearby building casts a 156-foot shadow, creating a similar right triangle. What is the height of the building?
A. 405.6 ft B. 84 ft C. 60 ft D. 31.2 ft
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2