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Questions in Grade High-school

[Done] A company plans to sell a new type of vacuum cleaner for $280 each. The company's financial planner estimates that the cost, $y$, of manufacturing the vacuum cleaners is a quadratic function with a $y$-intercept of 11,000 and a vertex of (500, 24,000). Which system of equations can be used to determine how many vacuums must be sold for the company to make a profit? A. [tex]\left\{\begin{array}{l}y=280 x \\ y=-0,052(x-500)^2+24,000\end{array}\right.[/tex] B. [tex]\left\{\begin{array}{l}y=280 x \\ y=0.052 x^2+11,000\end{array}\right.[/tex] C. [tex]\left\{\begin{array}{l}y=280 x \\ y=0.052(x-500)^2+24,000\end{array}\right.[/tex] D. [tex]\left\{\begin{array}{l}y=280 x \\ y=-0.052(x-500)^2+11,000\end{array}\right.[/tex]

[Done] Examine the expanded form: [tex]$a \cdot a \cdot a \cdot a \cdot a \cdot a \cdot a$[/tex] Which is the expression in exponential form? A. [tex]$7^a$[/tex] B. [tex]$7 a$[/tex] C. [tex]$a^7$[/tex] D. [tex]$a+7$[/tex]

[Done] In a free market, the price of goods is set by A. government officials. B. the consumer. C. the producer. D. workers and owners.

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] If $f(x)=x^2+1$ and $g(x)=x-4$, which value is equivalent to $(f \circ g)(10)$? A. 37 B. 97 C. 126 D. 606

[Done] Tick (✔) the correct answers. 1. Which of the following key is a toggle key? a. Enter b. Caps Lock c. Page up 2. Which key moves the cursor to the next line? a. Page down b. Num Lock c. Enter 3. Which key gives a blank space between the words? a. Enter b. Spacebar c. Home 4. This device has two buttons and a scroll wheel. a. Mouse b. Keyboard c. None of these

[Done] Solve for both price and quantities and show your work. Two linear equations are given: P = 22 - 4QD P = -2 + 2QS

[Done] Find the average TP for the last 3 days: Day 1 = 8 TP, Day 2 = 12 TP, and Day 3 = 7 TP.

[Done] Which one of the following is a consequence of external failures? (A) increased productivity (B) decreased lead time (C) increased inventory costs (D) increased returns

[Done] 1. Complete the sentences with suitable clauses. 1. Jaspreet did not help me. 2. You will get a good result. 3. She went early to bed. 4. They returned home. 5. I am taller. 6. He spoke nicely. Complete the conversation using the words who, which, or that. Rinki: Didn't you want to buy a new dress? Rini: Yes, but not from this shop. Their choice is limited, and I am not one of those people who will buy anything that comes along. Rinki: There's another shop over there. Rini: It looks expensive, one of those places which charge very high prices. Can afford their prices are the rich women who do not mind spending lavishly.