Evaluate.3x3 - 4x2 - x + 16, for x = -2
A. -34
B. -22
C. 2
D. -32
Answer: B
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Find the inverse of the matrix, if possible.A = 
A. 
B. 
C. 
D. 
Find the interest. Round to the nearest cent.$1860 at 5.8% for 10 months
A. Interest = $10.79 B. Interest = $89.90 C. Interest = $8990.00 D. Interest = $1078.80
Solve.Megan made her weekly trip to the fish market. This time she bought 2.8 pounds of cod for $2.75 per pound and 1.5 pounds of halibut for $7.75 per pound. How much did she spend altogether for fish? Round to the nearest cent if necessary.
A. $19.33 B. $17.13 C. $21.36 D. $20.43
Fourty liters of a 40% acid solution is obtained by mixing a 28% solution with a 50% solution.Write a system of equations in which one equation represents the amount of final mixture required and the other represents the percent of acid in the final mixture. Let x and y represent the amounts of the 28% and 50% solutions, respectively. ?
A. ?
B. ?
C. 
D. ?
E. ?