Find the mistake, then find the correct answer.Solve for x: x2 + 4 = 104line 1 x2 + 4 = 104line 2 
line 3 x2 = 100line 4 
= 
line 5 x = 10
What will be an ideal response?
Line 5 gave only the positive square root. The correct answer is x = ±10.
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Find f (c) by evaluating directly and by using synthetic division and the remainder theorem.f (x) = x 2 + 2x + 4 and c = 9
A. 95 B. 9 C. 107 D. 99 E. 103
Round the whole number to the given place value.8219, thousands
A. 8000 B. 9000 C. 8100 D. 7900
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 
B. 6
C. b
D. 
Simplify the polynomial answer and write it in descending order.Consider the rectangle that has a length given by (4x + 2) yards and a width given by (2x - 4) yards. Find the area of the rectangle.
A. The area is 8x2 + 8 square yards. B. The area is 8x2 - 8 square yards. C. The area is 8x2 + 12x - 8 square yards. D. The area is 8x2 - 12x - 8 square yards.