Solve.As Sunee improves her algebra skills, she takes 0.8 times as long to complete each homework assignment as she took to complete the preceeding assignment. If it took her 50 minutes to complete her first assignment, find how long it took her to complete the fifth assignment. Find the total time she took to complete her first five homework assignments. (Round to the nearest minute.)
A. 20 min; 148 min
B. 16 min; 148 min
C. 16 min; 168 min
D. 20 min; 168 min
Answer: D
Mathematics
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Solve.-5x = -8x + 30
A. x = 
B. x = 10
C. x = - 6
D. x = - 
Mathematics
Solve the equation and check your solution.
= 7
A. n = 9 B. n = 21 C. n = 10 D. n = 2
Mathematics
Add or subtract, as indicated. Assume that all variables represent positive real numbers.-5 - 7
+ 14
- 
A. -5 + 5
B. 33
C. -5 - 33
D. -5 + 33
Mathematics
Solve the formula for the given letter.
A. 
B. 
C. 
D. 
E. 
Mathematics