Solve the system by substitution.y = x2 - 4y = 12x - 39
A. (5, 29), (7, 53)
B. (-5, 21), (7, 45)
C. (-5, 21), (-7, 45)
D. (5, 21), (7, 45)
Answer: D
Mathematics
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Add. 8 + (-7)
A. -1 B. 15 C. 1 D. -15
Mathematics
First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Ray's gross pay is $250.50 per week. $51.28 is withheld for federal income tax, $31.22 for FICA tax, and $13.90 for other deductions. Find his net pay.
A. Estimate: $230; exact: $164.10 B. Estimate: $210; exact: $181.90 C. Estimate: $210; exact: $154.10 D. Estimate: $220; exact: $168.00
Mathematics
Multiply. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the line described. Through (4, 9), perpendicular to the y-axis
A. x = 4 B. 4x + 9y = 0 C. 4x + y = 9 D. y = 9
Mathematics