Solve the problem.Kate decides to replace all the lights in her college apartment with energy saving light bulbs beginning this month. The packaging says the new bulbs will use 75% less electricity. If Kate's electric bill last month was $7.29 from bulb use alone, project how much Kate's electric bill will be this month for bulb use.
A. $6.54
B. $2.55
C. $5.47
D. $0.80
E. $1.82
Answer: E
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A box with a square base, x feet by x feet, and no lid is to have a volume of 33 cubic feet. We can calculate both the height h, in feet, and the amount C, in square feet, of cardboard needed to make the box from the length x:
?
A: Find the value of x for the box using the minimum amount of cardboard. B: What is the height of the box you found in part A?C: How much cardboard is used for the box you found in part A?
?
(Round your answers to two decimal places.)
What will be an ideal response?
Solve the equation.2(3a - 1)2 + 7(3a - 1) + 3 = 0
A. - 
, - 
B. - 
, 
C. - 
, 
D. - 
, -3
Solve the problem.From a boat on the lake, the angle of elevation to the top of a cliff is 
If the base of the cliff is 1683 feet from the boat, how high is the cliff (to the nearest foot)?
A. 404 ft B. 407 ft C. 397 ft D. 394 ft
Make the indicated conversion within units of time.Convert 2 days to minutes.
A. 7200 minutes B. 172,800 minutes C. 48 minutes D. 2880 minutes