Solve. Use interval notation to express the range.The formula C = 0.5x + 18 represents the estimated future cost of yearly attendance at State University, where C is the cost in thousands of dollars x years after 2010. Use a compound inequality to determine in which years attendance costs will range from 22 to 24 thousand dollars.
A. [2018, 2022]
B. [2019, 2021]
C. [2017, 2021]
D. [2019, 2023]
Answer: A
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Simplify the expression by using the order of operations.7 ? 14 ÷ 
- 10 ÷ 2 + (12 - 8)
A. 23 B. 20 C. 13 D. 6
For the given function:(a) Find the intervals on which the function is increasing and decreasing. (b) Then identify the function's local extreme values, if any, saying where they are taken on.(c) Which, if any, of the extreme values are absolute?f(x) = -3x3 + 7x2 - 4
What will be an ideal response?
Solve the problem. Write the answer in lowest terms.Mrs. Montoya installed 
-inch roofing shingles on top of a 
-inch vapor barrier. What was the combined thickness of the two materials?
A. 
inch
B. 
inch
C. 
inch
D. 
inch
Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.275% annually. Determine the half-life of this isotope, to the nearest year.
A. 109 yr B. 3 yr C. 252 yr D. 182 yr