Simplify the expression by combining like terms.3z + 3 + 7z - 6
A. 13z
B. 10z - 3
C. -4z + 9
D. 10z + 9
Answer: B
Mathematics
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Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cot(x), -2? ? x ? 2?, x = 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the cylindrical coordinate integral.
A. 48 B. 32 C. 16 D. 24
Mathematics
If a family has 4 children, in how many ways could the parents have 2 boys and 2 girls as children? ? __________ ways ?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Decide whether the situation involves permutations or combinations.A blend of 2 spices taken from 8 spices on a spice rack.
A. Permutation B. Combination
Mathematics