Solve the problem.Use the formula d = 10 log (I/I0), where the loudness of a sound in decibels is determined by I, the number of watt/m2 produced by the soundwave, and 
watt/m2. What is the intensity in watt/m2 of a noise measured at 84 decibels? Round to the nearest tenth.
A. 2.5 × 10-3 watt/m2
B. 2.5 × 10-4 watt/m2
C. 8.4 × 10-10 watt/m2
D. 4.4 × 1015 watt/m2
Answer: B
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Find y".y = 
A. - 
B. - 
C. 
D. - 
Multiply. Write the answer in simplest form.
? 
A. 
B. 
C. 
D. 
Solve the problem.Water consumption in billions of gallons by Country F can be modeled by 
where x is the year. Similarly, water consumption by Country G can be modeled by 
(i) Numerically determine the year when the water consumption by the two countries was approximately equal. (ii) Determine the years when water consumption by Country G exceeds that of Country F.
A. Equal in about 2024; G exceeds F before 2024 B. Equal in about 2047; G exceeds F after 2047 C. Equal in about 2035; G exceeds F before 2035 D. Equal in about 2024; G exceeds F after 2024
Use the circle graph to solve the problem. Give your answer as a fraction, decimal, and as a percent.The circle graph below shows the majors for 720 college students at Blackwood Community College. What portion of the students are majoring in humanities? Round the decimal to thousandths and the percent to hundredths.
A. 
; 0.333; 33.33%
B. 
; 0.25; 2.5%
C. 
; 0.333; 3.33%
D. 
; 0.25; 25%