Solve the problem.Walt made an extra $5000 last year from a part-time job. He invested part of the money at 5% and the rest at 4%. He made a total of $210 in interest. How much was invested at 4%?
A. $4000
B. $2500
C. $3000
D. $1000
Answer: A
Mathematics
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Solve.Linda and Dave leave simultaneously from the same starting point biking in opposite directions. Linda bikes at 6 miles per hour and Dave bikes at 9 miles per hour. How long will it be until they are 30 miles apart from each other?
A. 
hr
B. 2 hr
C. 10 hr
D. 
hr
Mathematics
Solve the system using matrices.4x + 2y = -125x + 4y = -9
A. (-5, -4) B. (-5, 4) C. (4, -5) D. inconsistent system
Mathematics
Suppose that P is the endpoint of a segment PQ and M is the midpoint of PQ. Find the coordinates of endpoint Q.P(2, 8), M
A. Q
B. Q
C. Q(-9, 6)
D. Q
Mathematics
Simplify the rational expression. Assume that no variable has a value which results in a denominator with a value of zero.
A. 
B. 
C. 
D. 
Mathematics