Solve the problem.Charlene baby-sits for $10 per hour. She also works as a tutor for $12 per hour. Because of school, her parents only allow her to work 13 hours per week. How many hours can Charlene tutor and baby-sit and still make at least $75 per week? (a) Write a system of inequalities for this situation.(b) Graph the solution set. 
What will be an ideal response?
(a)
(b) 
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Plot the following data points along with a graph of the model obtained using logistic regression. x 5 10 15 20 25 30 y 28.77 54.12 102.11 161.44 185.21 190.45? ?
What will be an ideal response?
Use an Euler diagram to determine whether the argument is valid or invalid.All rock stars are performers.
Therefore, Meg is a rock star.
A. valid B. invalid
Solve the rational inequality. Express the solution using interval notation.
? 
A. 
? (3, ?)
B. 
C. 
? (3, ?)
D. 
? (5, ?)
Solve the problem.Find (i) the exact surface area and (ii) the approximate surface area of the right circular cylinder pictured below. Use 3.14 for ? and round your approximate answer to the nearest tenth. 
A. (i) 45? ft2; (ii) 141.3 ft2 B. (i) 81? ft2; (ii) 254.3 ft2 C. (i) 63? ft2; (ii) 197.8 ft2 D. (i) 72? ft2; (ii) 226.1 ft2