Solve the problem.The distribution of weights of students at a high school has a mean of 143 lb, a median of 
and modes at 
and 
State whether you think the distribution of weights is normal, rectangular, 
or 
Explain your
answer.
What will be an ideal response?
Since the distribution has two modes it is bimodal. These two modes are probably due to the different mean weights of males and females.
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Factor by grouping.45 - 5y - 9t + yt
A. (9 - y)(5 - t) B. (9 + y)(5 + t) C. (9 + y)(5 - t) D. (9 - y)(5 + t)
Solve the system of equations by graphing. If there is no solution or an infinite number of solutions, state this.
A. Infinite number of solutions B. (-1, 6) C. (1, 6) D. No solution
Solve the equation. If the equation is an identity or a contradiction, state this.16x + 9(x + 1) = 25(x + 1) - 16
A. {1} B. ? or { }; contradiction C. {0} D. all real numbers; identity
Graph the solution set of the system of inequalities or indicate that the system has no solution.y > x25x + 3y ? 15
A. 
B. 
C. 
D. 