Solve the problem.A college student earned $7500 during summer vacation working as a waiter in a popular restaurant. The student invested part of the money at 
and the rest at 
If the student received a total of $597 in interest at the end of the year, how much was invested at 
A. $3600
B. $1071
C. $3750
D. $3900
Answer: A
Mathematics
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Find the curvature of the curve r(t).r(t) = (9 + ln(sec t))i + (7 + t)k, -?/2 < t < ?/2
A. ? = cos t B. ? = -cos t C. ? = 1 - cos t D. ? = sin t
Mathematics
Classify the function as a polynomial function, rational function, or root function, and then find the domain. Write the domain in interval notation.g(x) = 
A. rational function; (9, ?) B. rational function; (-?, 0) ? (0, ?) C. rational function; (-?, -3) ? (-3, 3) ? (3, ?) D. rational function; (-?, ?)
Mathematics
Find the volume of the sphere satisfying the given condition. Approximate values to the nearest tenth.radius = 1.5 m
A. 14.1 m3 B. 113.0 m3 C. 7.9 m3 D. 9.4 m3
Mathematics
Add or subtract.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics