Provide an appropriate response.Give two ratios that are equivalent to the ratio 21 to 8. Explain how you found them.
What will be an ideal response?
Answers will vary. One possibility: 42 to 16 and 63 to 24. Both 21 and 8 are multiplied by 2 in the first case and 3 in the second case.
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Solve the problem.Fred bicycles 3 km/h slower than Samantha. In the time it takes Fred to bicycle 20 km, Samantha travels 26 km. How fast does Fred bicycle?
A. 7 km/h B. 10 km/h C. 20 km/h D. 13 km/h
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.x1/8 ? x7/8
A. 
B. x7/8
C. x
D. x7/64
The quantity of Sicard wristwatches demanded each month is related to the unit price by the equation 
, where p is measured in dollars and x in units of a thousand.
?
Find the marginal revenue function 
.
?
A. 
B. 
C. 
D. 
Solve the problem.The logistic growth function f(t) = 
models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a particular community. How many people became ill with this infection when the epidemic began?
A. 813 people B. 70 people C. 814 people D. 57,000 people