Determine the number of significant digits in the given approximate number.800
A. 2
B. 4
C. 1
D. 5
Answer: C
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Find the area of the surface generated by revolving the curve about the indicated axis. y = 
, 0.5 ? x ? 1.5; x-axis
A. 5? B. 3? C. ? D. 4?
Change the following fraction to a percent.
?
?
A. 875% B. 87.5% C. 0.875% D. 56% E. 8.75%
Solve.In order for a chemical reaction to remain stable, its Celsius temperature, C, must be no more than 77.48° C. At what Fahrenheit temperatures, F, will the reaction remain stable. 
Round to the nearest hundredth of a degree, if necessary.
A. At temperatures less than or equal to 25.27° Fahrenheit B. At temperatures greater than or equal to 171.46° Fahrenheit C. At temperatures greater than or equal to 25.27° Fahrenheit D. At temperatures less than or equal to 171.46° Fahrenheit
Solve.A store sells tents, sleeping bags, and camp stools. A customer buys a tent, 3 sleeping bags, and 5 camp stools for $213. The price of the tent is 7 times the cost of a camp stool. The cost of a sleeping bag is $26 more than the cost of a camp stool. Find the cost of each item.
A. $63 for a tent; $40 for a sleeping bag; $14 for a camp stool B. $70 for a tent; $35 for a sleeping bag; $10 for a camp stool C. $63 for a tent; $35 for a sleeping bag; $9 for a camp stool D. $63 for a tent; $35 for a sleeping bag; $10 for a camp stool