Solve the quadratic equation using the quadratic formula.9x2 + 12x + 4 = 0
A. 
B. 
C. 
D. 
Answer: A
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Use a calculator or computer program to approximate the value of y(T) using Euler's method with the given time step on the interval [0, T]. Then, using the exact solution given, find the error in the approximation to y(T) (only at the right endpoint of the time interval). Round answers to five decimal places, do not use intermediate rounding.y'(t) = 
, y(0) = 7; ?t = 0.2, T = 1; y(t) = 
A. y(1) ? 7.08532; 7.07107 B. y(1) ? 7.08532; 0.20000 C. y(1) ? 7.08532; 0.01425 D. y(1) ? 7.07107; 0.01425
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 42 ? 45
A. 262,144 B. 16,777,216 C. 16,384 D. 1,048,576
Perform the indicated operations and express your answer in the form a + bi. 
A. -13 B. 13 C. 13i D. -13i
Divide and write the answer in simplest form.-98 ÷ (-7)
A. 
B. -14
C. 14
D. 4