Solve the variation problem.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 2 foot-candles, find the intensity on a screen 20 ft from the light.
A. 1
foot-candles
B. 
foot-candle
C. 2 foot-candles
D. 
foot-candle
Answer: B
You might also like to view...
Solve the problem.The sale price on an outfit Jan wanted was a 5-digit palindromic number, say $abc.de, satisfying the given conditions: Jan would never pay over $200.00;b, c, and d are all multiples of 3;c = (d + b) - 12;the sum of all the digits is a multiple of 13;a + e = (b + d) - 16; and c = 3(a + e).What amount does she owe the salesperson?
A. $193.91 B. $136.31 C. $196.91 D. $296.92
Graph the function using the slope and y-intercept.f(x) = 
x + 3
A. 
B. 
C. 
D. 
Refer to the double-bar graph below which shows the number of male and female athletes at a university over a four-year period. Solve the problem.
How many students were involved in athletics in 2002?
A. 400 B. 350 C. 250 D. 300
Use the unit circle below to estimate sin 2.0 to the nearest tenth.
What will be an ideal response?