# Has one equation and two unknownsHas two equations with different sets of unknownsHas more sets of unknowns than equationsQuestion 2A system of two linear equations and two unknowns can be solved by:EliminationSubstitutionGraphing the equationsAll of the aboveQuestion 3A system of two linear equations and three unknowns can be solved by:EliminationSubstitutionGraphing the equationsIt cannot be solvedQuestion 4A system of equations has as many?equations as there are variables?(unknowns).?True?FalseQuestion 5Solve these two equations by elimination, substitution or graphingEquation 1:?x+y=1Equation 2:?-2x+4y=6X=-1/3, y = 4/3X= 4/3, y = -1/3X=1/3, y=4/3X=-4/3, y-=1/3Question 6For the following System of?Equations,?the?Matrix?Form included below is correct.2x+y+z=4??6y+5z=-33x5y-z=27Matrix Form:?2 1 1 / 4 33 6 5 / 0 0 5 -1 / 27?True?FalseQuestion 7The cost C (in millions of dollars) of removing p% of the industrial and municipal pollutants discharged into a river is given byC= 245p/100-p, 0 ??p < 100According to this model, explain why or why not it is possible to remove 100% of the pollutants??Question 8The admission fee at the county fair is?\$2?for children and?\$4?for adults. On a certain day,?2000?people enter the fair and?\$5000?is collected. Using?c?as the variable to represent the number of children and?a as the variable for adults, write system of equations to determine how many children and how many adults attended.?Note down this system of equations so that you can use it for the next question.Question 9Based on the system of equations you wrote in the previous problem, how many children attended the county fair that day?Question 10Evaluate the function ?(x) = 5x + 4 at ?(0)9140Question 11The profit P (in hundreds of dollars) that a company makes depends on the amount x (in hundreds of dollars) the company spends on advertising according to the model. P(x) = 230 + 40x - 0.5x2?What expenditure for advertising will yield a maximum profit?400.523020Question 12The concentration C (in mg/dl), of a certain antibiotic in a patient's bloodstream is given by??50t/t^2+25?where t is the time (in hours) after taking the antibiotic. What is the concentration 10 hours after taking the antibiotic?Question 13Write the logarithmic equation in exponential form.Log2?16 = 4Question 14Find the domain of the function:? f(x)=3/xAll real numbersAll real numbers except x=3All positive real numbersAll real numbers except x=0Question 15pH?is a measure of the hydrogen ion concentration of a solution. It is?defined as the negative logarithm of the hydrogen ion concentration.?The equation is:pH = - log [H+]?If an acid has anH+?concentration of 10-7, find the pH?Question 16In order to join a movie streaming service, you pay a \$75 annual fee, then \$1.50 for each movie you stream. Which equation will allow you to?determine the cost you will pay if you stream x number of movies??Question 17Evaluate the function at the indicated value of x.?Function:?f(x)?=?0.5x?Value: x = 2Question 18Find the domain of the function?f(x)=7/6-xDomain: all real numbers x except x=7Domain: all real numbers x except x=6Domain: all real numbers xDomain: all real numbers x except x = -6Question 19Express the following matrix as a system of equations:2 3 / 5-4 7 / 2Question 20Solve for x.4x?= 16Solution details:STATUS Answered QUALITY Approved ANSWER RATING This question was answered on: Apr 19, 2020 PRICE: \$15 Solution~000.zip (25.37 KB) Buy this answer for only: \$15 This attachment is locked × Please Enter The Email Where You Want To Receive Solution. Get this solution for only: \$

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