Questions asked by Widi K.

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• Number of ribbons it can sell each week, x, is related to the price p per ribbon by the equation x=900-100p. At what price should the company sell the ribbons if it wants the weekly revenue to be $1,800? (Remember: The equation for revenue is R xp)
  
• An object is thrown downward with an initial velocity of 3 feet per second. The relationship between the distance s it travels and time t is given by s=3t+16t^2 . How long does it take the object to fall 70 feet?
  
• The top of Mount Whitney, the highest point in California is 14494 feet above sea level. Find this height in miles to the nearest tenth of a mile? .
  
• The speed of sound is 1,088 feet per second. Convert the speed of sound to miles per hour. Round your answer to the nearest whole number ? .
  
• Please help me to solve this question. I'm still get stuck. A Ferris wheel has a circumference of 458 feet. If a trip around takes 30 seconds, find the average speed in miles per hour?. Round to the nearest tenth.
  
• I'm really stuck how to Graph x+y=5 on the coordinate system below showing the graph of y=#4/x#. At what points do the graphs intersect?
  
• One car travels 270 miles in the same amount of time it takes a second car traveling 6 miles per hour slower than the first to go 234 miles. What are the speeds of the cars?
  
• To train for the running portion of the race,she runs 7 miles each day over the same course. The first 3 miles of the course is on level ground, while the last 4 miles is downhill. She runs 2 miles per hour slower on level ground than she runs downhill?
  
• The length of a rectangle is 2 times the width. If the perimeter is to be greater than 48 meters. What are the possible values for the width? (Use w as the width)
  
• Each of the following temperature ranges is in degrees Fahrenheit. Use the formula F=#9/5C+32# to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion)?
  
• For the following function, how do I construct a table. #y=3x; and -3<=x<=4#?
  
• Let F(x)=#x^2+3# , evaluate the following?
  
• Let f(x)=#x^2+4# and g(x)=2x-2, evaluate the following?
  
• A painting is purchased as an investment for $200. If its value increases continuously so that it doubles every 5 years, then its value is given by the function V(t)=#200*2^(t/5)# for t #>=0# ?
  
• [Different Ask] Each of the following temperature ranges is in degrees Fahrenheit. Use the formula F=#9/5C+32# to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion)?
  
• Use the following formulas to answer the questions below: T(M,R)=R+0.6(M-R) M(x)= 220-x where R= resting heart rate, M= maximum heart rate, and x= age Recall our discussion of heart rate and composition of functions from the end of the section?
  
• A company manufactures and sells DVD's. Here are the equations they use in connection with their business. Number of DVD's sold each day: n(x)=x Selling price for each DVD: p(x)=11.5−0.07x Daily fixed costs: f(x)=160?
  
• Let #f(x)=5x+4# and #g(x)=x−4/5# , find: a). #(f@g)(x)# ? b). #(g@f)(x)# ?
  
• Let f(x)=#x^2+2# and g(x)=2x−2, evaluate: f(g(3))?
  
• Let f(x)=#x^2# and g(x)=x+6, find: (f ∘ g) (x)?
  
• Solve #sin^2(x)=cos(x# )for all solutions 0≤x<2π. Ask for X? Give your answers accurate to 2 decimal places, as a list separated by commas
  
• The processor speed, in megahertz, of certain PC processors could be approximated by the following function of time t in years since the start of 1995: P(t) = 75t + 220 if 0 ≤ t ≤ 4 600t − 1880 if 4 < t ≤ 9. (A) Evaluate P(0), P(3), and P(6)?