Solve the equation and check your solution.-5x = -30
A. x = 25
B. x = 6
C. x = -25
D. x = 2
Answer: B
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Use differentiation to determine whether the integral formula is correct.
dx = -6 cot 
+ C
A. Yes B. No
Solve.- 
+ h = - 
A. h = 
B. h = 
C. h = 
D. h = 
Use the indicated model of multiplication to illustrate the statement.(2 ? 3) ? 4 = 2 ? (3 ? 4); array model
A. (2 ? 3) ? 4 has four sets of blocks with 2 rows and 3 columns in each set.
4 sets of these
2 ? (3 ? 4) has two sets of blocks with 3 rows and 4 columns in each set.
2 sets of these
B. (2 ? 3) ? 4 has six sets of blocks with 1 column and 4 rows in each set.
6 sets of these
2 ? (3 ? 4) has 12 sets of blocks with 1 column and 2 rows in each set.
12 sets of these
Factor. Check by multiplying.45 - 10x
A. 5(9 - 2x) B. 5(9 - 10x) C. 5(2 - 9x) D. (9 - 2)5x