For a continuous-time signal y(t) = x1(t)x2(t) (multiplication), assume the Fourier transform of x1(t) is X1(jω) and the Fourier transform of x2(t) is X2(jω), what is the Fourier transform Y(jω) of y(t)?

Which of the following statements is true? 1. Custom-fit guards use multiple layers of thermoplastic material bonded and heated to fit.2. Custom-fit guards cost less than either stock or boil and bite guards.3. Boil-and-bite bite guards are easily fit and provides a high level of protection.4. Stock guards are expensive and have a high wear compliance.

The interconnection of two LTI systems is shown below. What is the overall impulse response h(t)? 

Consider a discrete time LTI system for which the input and output are related by the difference equation y[n] + 2y[n-1] – 8y[n-2] = x[n] + 3x[n-1]. Suppose the discrete time Fourier transform exists for the impulse response h[n]. Is the system causal? 

Consider a discrete time LTI system for which the input and output are related by the difference equation y[n] + 2y[n-1] – 8y[n-2] = x[n] + 3x[n-1]. Suppose the discrete time Fourier transform exists for the impulse response h[n]. Is the impulse response h[n] right-sided, left-sided or two-sided? 

Helena Corporation declared a 2-for-1 stock split on 8,000 shares of $6 par value common stock. If the market price of the stock had been $25 a share before the split, the par value, number of shares, and approximate market value after the split would be: Par Value Number of Shares Market Value A. $ 6.00 16,000 $ 12.50 B. $ 6.00 8,000 $ 25.00 C. $ 3.00 16,000 $ 12.50 D. $ 3.00 16,000 $ 25.00

On January 1, Year 5, Raven Limo Service, Incorporated sold a used limo that had cost $80,000 and had accumulated depreciation of $44,000. The limo was sold for $32,400 cash. Which of the following shows how the sale of the limo would affect Raven’s financial statements? Balance Sheet Income Statement Statement of Cash Flows Assets = Liabilities + Equity Cash + Book Value of Limo Gain − Loss = Net Income A. 32,400 + (36,000) = + (3,600) 3,600 − = (3,600) 32,400 IA B. 32,400 + (36,000) = + 3,600 3,600 − = 3,600 3,600 IA C. 32,400 + (36,000) = + (3,600) − 3,600 = (3,600) D. 32,400 + (36,000) = + (3,600) − 3,600 = (3,600) 32,400 IA

Glasgow Enterprises started the period with 80 units in beginning inventory that cost $1.90 each. During the period, the company purchased inventory items as follows: Purchase Number of Items Cost 1 400 $2.40 2 100 $2.50 3 60 $2.90 Glasgow sold 265 units after purchase 3 for $7.80 each. What is Glasgow’s cost of goods sold under FIFO?

Glasgow Enterprises started the period with 70 units in beginning inventory that cost $2.50 each. During the period, the company purchased inventory items as follows: Purchase Number of Items Cost 1 360 $3.00 2 120 $3.10 3 60 $3.50 Glasgow sold 380 units after purchase 3 for $9.60 each. What is Glasgow’s ending inventory under weighted-average? Note: Round your intermediate computation to 2 decimal places.

A company determined that a $9,700 account receivable was uncollectible. Which of the following shows how the write-off of this receivable will affect the company’s financial statements? Balance Sheet Income Statement Statement of Cash Flows Assets = Liabilities + Equity Revenues − Expenses = Net Income A. = + − $ 9,700 = $ (9,700) $ (9,700) OA B. $ (9,700) = + $ (9,700) − $ 9,700 = $ (9,700) C. = + − = D. $ (9,700) = $ (9,700) + − $ 9,700 = $ (9,700)