Provide an appropriate answer.Let A = 
and B = 
. Show that A(A + B) = A2 + AB. Show all your work.
What will be an ideal response?
Answers may vary. One possible solution follows.
Left-hand side:
A(A + B) = 
= 
= 
Right-hand side:
A2 + AB = 
+ 
= 
+ 
= 
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Find the slope of the polar curve at the indicated point.r = -4 cos ? - 6 sin ?, ? = 
A. - 
B. 
C. - 
D. 
Find percent notation.0.00085
A. 0.0085% B. 0.000085% C. 0.085% D. 0.85%
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A. (15x + 2)(x + 3) B. (3x + 2)(5x + 3) C. (3x - 2)(5x - 3) D. prime
Simplify the expression using multiplication.The area of the vertical faces of a rectangular solid with height h and base edges l and b can be expressed as 
Write this formula without parentheses and without multiplication signs.
A. A = 2h + lb B. A = 2hl + b C. A = 2hlb D. A = 2hl + 2hb