Solve the problem.A sports shop sold tennis rackets in 2 different weights, 3 types of string, and 4 grip sizes. How many different rackets could they sell?
A. 20
B. 9
C. 24
D. 12
Answer: C
Mathematics
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Establish the identity.
= 
What will be an ideal response?
Mathematics
Simplify. Assume that all variables represent non-negative real numbers.
A. 8a7b8
B. 8a3b4
C. 8a3b4
D. 8b4
Mathematics
Provide an appropriate response.What is the least number of inequalities needed to produce a closed region?
A. 4 B. 1 C. 2 D. 3
Mathematics
Find the best buy (based on cost per unit).You have a coupon for 63 cents off Brand A cereal and a coupon for 39 cents off Brand B. A box of 
cereal costs $2.84 for 10.5 ounces. A box of Brand B cereal costs $4.88 for 19.5 ounces. If you use a coupon, which cereal is the better buy?
A. Equal value B. Brand A C. Brand B D. Not enough information
Mathematics