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Questions in Grade College

📝 Answered - Select the correct answer. Which function is decreasing and approaches negative infinity as $x$ increases? A. $f(x)=3(0.6)^x-1$ B. $f(x)=-3(0.6)^x+1$ C. $f(x)=3(6)^x-2$ D. $f(x)=-3(6)^x+2

📝 Answered - An isotope with 15 protons and 17 neutrons will have which symbol? A. ${}_{15}^{17} Cl$ B. ${}_{15}^{17} P$ C. ${}_{17}^{32} Cl$ D. ${}_{17}^{32} P$ E. ${}_{15}^{32} P

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

📝 Answered - 1. Why is it important to follow proper safety procedures when removing and installing an engine? (2 marks) 2. List and explain the steps you should take before removing an engine from a vehicle. (8 marks) 3. What problems can occur if an engine is not installed correctly, and how can they be avoided? (2 marks) 4. List the device used to remove the engine from the vehicle.

📝 Answered - Which equation represents a circle that contains the point $(-2,8)$ and has a center at $(4,0)$? Distance formula: $\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}$ A. $(x-4)^2+y^2=100$ B. $(x-4)^2+y^2=10$ C. $x^2+(y-4)^2=10$ D. $x^2+(y-4)^2=100

📝 Answered - An old person moves on a semi-circular track of radius 40.0 m during a morning walk. If he starts at one end of the track and reaches the other end, find the distance covered and the displacement of the person.

📝 Answered - True or False? Because quantities are typically not large, a company can send cleanup residue from a HAZMAT spill to a landfill, or they can bury it on-site.

📝 Answered - Select the correct answer. A coffee shop begins the day with 75 bagels and sells an average of 10 bagels each hour. Function [tex]$b$[/tex] models the bagel inventory, [tex]$b(x), x$[/tex] hours after opening. [tex]$b(x)=75-10 x$[/tex] If the coffee shop wants to make a graph of function [tex]$b$[/tex], which values of [tex]$x$[/tex] should it include on the graph to include the relevant domain within the context? A. [tex]$0 \leq x \leq 7.5$[/tex] B. [tex]$0 \leq x \leq \infty$[/tex] C. [tex]$-\infty \leq x \leq \infty$[/tex] D. [tex]$0 \leq x \leq 75$[/tex]

📝 Answered - Which solution value satisfies the inequality [tex]x-6 \geq -7[/tex]? A) [tex]x=0[/tex] B) [tex]x=-2[/tex] C) [tex]x=-7[/tex] D) [tex]x=-5[/tex]

📝 Answered - Finding the Inverse of a Function The formula for converting a temperature in degrees Celsius to degrees Fahrenheit is [tex]F(C)=\frac{9}{5} C+32[/tex]. The inverse function will convert a temperature in degrees Fahrenheit to degrees Celsius. What is the formula for converting from degrees Fahrenheit to degrees Celsius? [tex]C(F)=\square F-\square[/tex].