Solve the system of equations by substitution.4x + 4y = -44x = -20
A. (-5, -4)
B. (-5, 4)
C. (-5, 0)
D. (4, -5)
Answer: B
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Find the LCD of the given rational expressions.
; 
A. 5 + p B. -p - 5 C. (p - 5)(5 - p) D. -(p - 5)
Solve the problem.The difference of the reciprocals of two consecutive integers is 1/56. Find the integers.
A. 6 and 7 or -6 and -7 B. 7 and 8 or -7 and -8 C. 28 and 29 or -28 and -29 D. 8 and 9 or -8 and -9
Solve the problem.The difference of the reciprocals of two consecutive integers is 1/72. Find the integers.
A. 8 and 9 or -8 and -9 B. 9 and 10 or -9 and -10 C. 36 and 37 or -36 and -37 D. 7 and 8 or -7 and -8
Solve the problem.There are currently 67 million cars in a certain country, increasing by 2.4% annually. How many years will it take for this country to have 91 million cars? Round to the nearest year.
A. 132 yr B. 4 yr C. 13 yr D. 10 yr