Simplify the expression.124.23 ÷ 
+ 57.92 ? 
A. 221.53
B. 217.65
C. 76.494
D. 66.2425
Answer: A
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Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
Write a system of linear equations in three variables, and then use matrices to solve the system.There were approximately 100,000 vehicles sold at a particular dealership last year. The dealer tracks sales by age group for marketing purposes. The percentage of 36- to 59-year-old buyers and the percentage of buyers 60 and older combined exceeds the percentage of buyers 35 and younger by 34%. If the percentage of buyers in the oldest group is doubled, it is 25% less than the percentage of users in the middle group. Find the percentage of buyers in each of the three age groups.
A. 33% 35 and younger; 53% 36-59 year olds; 14% 60 and older B. 27% 35 and younger; 55% 36-59 year olds; 18% 60 and older C. 14% 35 and younger; 53% 36-59 year olds; 33% 60 and older D. 35% 35 and younger; 50% 36-59 year olds; 15% 60 and older
Find the indicated partial sum for the given sequence.s4, 81, 243, 729, 2187, . . .
A. 3240
B. 9801
C. 2187
D. - 
Use the given graph of a quadratic function to find the solution set of the equation or inequality.x2 - 11x + 28 ? 0
A.
 ? |
B.
? 
C.
D.
