Solve the following system of equations. Round your answers to two decimal places.
What will be an ideal response?
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The speed of sound in air depends on the temperature. When the temperature is 32 degrees Fahrenheit, the speed 
of sound is 1087.5 feet per second. The average rate of change for ?S is 1.1 feet per second per degree Fahrenheit. Use these facts to estimate the speed of sound in air when the temperature is 59 degrees Fahrenheit.
?
A. 1088.6 feet per second B. 1097.5 feet per second C. 1117.20 feet per second D. none of the above
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(6, -2); slope: - 
A. y = - 
x + 6
B. y = 
x - 2
C. y = - 
x + 
D. y = - 
x + 2
Solve.One end of a guy wire is attached to the top of a 24-foot pole and the other end is anchored into the ground 20 feet from the base of the pole. Find the length of the guy wire. Round to the nearest tenth of a foot.
20 feet
A. 44.3 ft B. 44 ft C. 31.2 ft D. 31.5 ft
?A study of the effectiveness of a flu vaccine was conducted with a sample of 464 people. Some participants in the study were given no vaccine, some were given one injection, and some were given two injections. The results of the study are listed in the table. ? No vaccineOne injectionTwo injectionsTotalFlu851225No flu13541263439Total14346275464A person is selected at random from the sample. Find the probability that the person had two injections. Round your anser to one decimal place.
A. ?275.0% B. ?63.3% C. ?71.3% D. ?67.3% E. ?59.3%