Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Jack is currently driving into a headwind (17% decrease). If his normal mileage is 35 mpg, what will his car's mileage be in the headwind? Round your answer to the nearest tenth.
A. 52 mpg B. 35 mpg C. 29.1 mpg D. 7.3 mpg
Solve the problem.During a sale, a store sells red-dot items at a 30% discount and yellow-dot items at a 10% discount. A shopper bought red- and yellow-dot items with a combined regular price of $44.00. If the total discount was $8.00, how much did the shopper spend on each kind of item?
A. Red-dot items: $23.40 Yellow-dot items: $12.60 B. Red-dot items: $18 Yellow-dot items: $26 C. Red-dot items: $12.60 Yellow-dot items: $23.40 D. Red-dot items: $26 Yellow-dot items: $18
Decide whether the following is a statement or is not a statement.My favorite baseball team will win the pennant.
A. Not a statement B. Statement
Simplify the radical.
A. -2x + 9 B. -|2x - 9| C. 2x - 9 D. |2x - 9|