Find the least common denominator (LCD).
, 
A. (r + 8)2
B. r(r + 1)(r + 8)
C. r(r + 8)2
D. r(r + 8)
Answer: C
Mathematics
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Factor by grouping.15x2 - 9x - 20x + 12
A. (3x - 4)(5x - 3) B. (15x - 4)(x - 3) C. (3x + 4)(5x + 3) D. (15x + 4)(x + 3)
Mathematics
Solve the problem.While shopping for a party, June bought 
of hamburger, 
of chicken, and 
of ham. How much meat did she buy?
A. 
lb
B. 9
lb
C. 
lb
D. 2
lb
Mathematics
Write the quadratic function in the standard form y = a(x - h)2 + k.y = x2 - 18x
A. y = (x - 18)2 - 324 B. y = (x + 18)2 - 18 C. y = (x + 9)2 - 9 D. y = (x - 9)2 - 81
Mathematics
Solve for the variable. Choose the method you feel will work best.3x2 = 39
A. x = 19.5
B. x = ±13
C. x = 14
D. x = ±
Mathematics