Reference no: EM13536757

1. Decide whether the inverse function of g = {(–4, –1), (–2, 0), (1, –1), (2, –2)} is a function.

19. Perform the indicated operations.

(1 – 10i) – ( 3 + 2i) + (2 + 13i)

20. Solve the exponential equation for x. 7^x = 49^{x +1}

22. Find the center and radius of the circle. Then graph it. (x – 2)² + y² = 16

25. Find the value of the discriminant and give the number of real solutions. 4x² + 2x + 2 = 0

26. If $5,000 is invested in a savings account with an interest rate of 9%, coumpounded annually, the amount in the account after t years is given by

A(t) = 5000(1 + 0.09)^t

Use a calculator to find the amount in the account after 6 years. Round your answer to the nearest cent.