Solve the problem.A shirt company has 3 designs that can be made with short or long sleeves. There are 7 color patterns available. How many different types of shirts are available from this company?
A. 10
B. 12
C. 42
D. 21
Answer: C
Mathematics
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Decide whether or not the given equation is an identity.
= 
A. Yes B. No
Mathematics
Solve for x:
45 ÄÄ = 5 x a. x = 50 b. x = 40 c. x = 15 d. x = 12 e. x = 9
Mathematics
Find the value of the determinant.
A. 960 B. -600 C. -156 D. 156
Mathematics
Using the horizontal-line test, determine whether the function is one-to-one.f(x) = 
A. Yes B. No
Mathematics