Solve, using the substitution method, and check.
Enter your answer as an ordered pair in the form (x, y).
What will be an ideal response?
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Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.The median family income in a certain year was $46,676 and there were about 7.2 × 107 families. Calculate the total family income for that year.
A. $336 × 1012 B. $2 × 1012 C. $3.36 × 1012 D. $3.36 × 10-12
Explain the mistake, then work the problem correctly.(4x3 - 2x2 + 5x - 1) - (8x3 - 7x2 - 2x + 4)= (4x3 - 2x2 + 5x - 1) + (-8x3 + 7x2 - 2x + 4)= -4x3 + 5x2 + 3x + 3
What will be an ideal response?
Find the product.(2x + 5)3
A. 4x6 + 10x3 + 15,625 B. 8x3 + 60x2 + 60x + 125 C. 4x2 + 20x + 25 D. 8x3 + 60x2 + 150x + 125
If y varies inversely as x, find the inverse variation equation for the situation.y = 9 when x = 7
A. y = 
B. y = 
C. y = 
D. y = 
x