Calculate the average rate of change in NFL offensive guard weight of a in lbs

# Calculate the average rate of change in nfl offensive

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Calculate the average rate of change in NFL offensive guard weight of a (in lbs per year) between the years 1975 and 2005 year 1970 1975 1980 1985 1990 1995 2000 2005 weight (lbs) 254 256 264 277 301 300 310 316 Correct Answer 2 lbs per year- correct answer 60 lbs per year You Answered 6 lbs per year 20 lbs per year

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12 lbs per year The average rate of change (in lbs per year) is the change in lbs divided by the change in years: Question 8 0 / 1 pts The table below shows y as a function of x, so that y=f(x). Is f(x) an increasing function or decreasing function? Is it concave up, concave down, or linear? x 0 10 20 30 40 50 60 y 5 10 13 15 16 16.5 16.75 f(x) is decreasing and concave up. Correct Answer f(x) is increasing and concave down. f(x) is decreasing and concave down. f(x) is increasing and concave up. You Answered f(x) is increasing linearly. is increasing. Notice that the size of the increase is getting smaller as gets larger. This means that is concave down. This may be more clear by looking at a plot plot of the points in the table
Question 9 0 / 1 pts A graph of a function f(x) is shown above. On the interval [a,b], state whether f(x) is increasing or decreasing. Also whether f(x) is concave up, concave down, or linear on the interval [a,b]. he function f(x) is increasing and concave down on the interval [a,b]. The function f(x) is decreasing and concave up on the interval [a,b].

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The function f(x) is increasing and concave up on the interval [a,b]. Correct Answer The function f(x) is decreasing and concave down on the interval [a,b] You Answered The function is decreasing and linear on the interval [a,b]. The function is decreasing and concave down on the interval . Question 10 1 / 1 pts A local shop specializes in selling smoothies. Suppose the shop has fixed monthly costs of \$8,600 per month and the variable costs are \$2.25 per smoothie made on site. Each smoothie sells for \$5.75. Find the firm's profit function. Correct! The revenue function . The cost function Question 11 1 / 1 pts
Simplify the expression: (4x2y3)12 Correct! Question 12 1 / 1 pts The following formula describes the quantity Q of a substance in milligrams (mg) as a function of time t, in hours. Q=30+15t. Choose the correct statement below. When t=0, Q=30mg. Q is decreasing exponentially at 30% per hour. Correct! When t=0, Q=30mg. Q is increasing linearly at 15 mg per hour.

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When t=0, Q=15mg. Q is decreasing linearly at 30mg per hour. When t=0, Q=30mg. Q is increasing exponentially at 15% per hour. When t=0, Q=0mg. Q is increasing exponentially at 15% per hour. When , mg. is increasing linearly, at 15 mg per hour. Question 13 0 / 1 pts A quantity P is a exponential function of time t, that is P=P0at, where a is a positive constant and P0 is the quantity at t=0. Suppose that Use this information to find a and P0 and state the rate of exponential growth or decay. a=2.75, , exponential growth at a rate of 2.75% You Answered a=0.8, , exponential growth at a rate of 80%.

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