Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 1
B. 
C. 
D. 
Answer: B
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Find the domain of the vector function r(t) = 8ti+ Figure 3.png)
 multiple choice.png)
Solve the problem.A machine part must be of diameter 
inch to work properly. The diameter can deviate no more than 0.1 inch above or below this value. A sample from the manufacturer measured 0.39 inch. Is this within the allowed tolerance?
A. Yes B. No
Find the zeros of the function.f(x) = 2x2 - 5x - 7
A. 
, -1
B. 
, 0
C. 
, -1
D. 
, 1
Solve.Howard builds patio chairs and dog houses that he sells at the local flea market. It takes him 4 hours to build a dog house and 5 hours to build a patio chair. Howard can work no more than 40 hours per week and he must produce more dog houses than chairs. Further, he wants to build at least 7 items each week. Write a system of inequalities to describe this situation and solve the system by graphing. Use D for the number of dog houses and P for the number of patio chairs produced each week.
A. 
B. 
C. 
D. 