Solve the problem.Walt made an extra $7000 last year from a part-time job. He invested part of the money at 7% and the rest at 6%. He made a total of $450 in interest. How much was invested at 6%?
A. $3500
B. $3000
C. $5000
D. $4000
Answer: D
Mathematics
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Use the appropriate identity to find the indicated function value. Rationalize the denominator, if applicable. If the given value is a decimal, round your answer to three decimal places.cot ?, given that tan ? = 0.067
A. 14.939 B. 14.925 C. 14.918 D. 14.932
Mathematics
Solve for the missing number.
= 
A. - 
B. - 
C. - 
D. 
Mathematics
Find the width of the river in the illustration. Round your answer to the appropriate number of significant digits.
A. 113 m B. 108 m C. 105 m D. 115 m E. 112 m
Mathematics
Find the derivative.y = (3x2 + 5x + 1)3/2
A. 
= 
(3x2 + 5x + 1)1/2
B. 
= (6x + 5)(3x2 + 5x + 1)1/2
C. 
= (3x2 + 5x + 1)1/2
D. 
= 
(6x + 5)(3x2 + 5x + 1)1/2
Mathematics