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Questions in Grade College

[Answered] Describe the error made in subtracting the two rational expressions shown: [tex]\begin{array}{l} \frac{1}{x-2}-\frac{1}{x+1} \ =\frac{x+1}{(x-2)(x+1)}-\frac{x-2}{(x-2)(x+1)} \ =\frac{-1}{(x-2)(x+1)} \end{array}[/tex]

[Answered] The table shows the number of calories in four meals and the cost of each meal. Cost of Meal and Number of Calories | Number of calories in the meal | Cost of the meal | | :----------------------------- | :--------------- | | 550 | $12 | | 1,250 | $11 | | 780 | $13 | | 650 | $10 | Which best describes the strength of the model? A. a weak positive correlation B. a strong positive correlation C. a weak negative correlation D. a strong negative correlation

[Answered] Multiply. $(9 x-2)(-4 x-3)$

[Answered] Your friend has prepared his monthly budget and asks you if he has overlooked anything in this planning. Which of the following questions points out his most serious omission? \begin{tabular}{|l|l|l|} \hline & A & B \\ \hline 1 & Cash Inflows & \\ \hline 2 & Disposable income & \$4,165 \\ \hline 3 & Interest on savings & \$0 \\ \hline 4 & Income from stocks & \$50 \\ \hline 5 & Total Cash Inflow & \$4,215 \\ \hline 6 & & \\ \hline 7 & Cash outflows & \\ \hline 8 & Mortgage & \$1,000 \\ \hline 9 & Homeowner's Insurance & \$60 \\ \hline 10 & Car payment & \$373 \\ \hline 11 & Car insurance & \$125 \\ \hline 12 & Stock purchases & \$200 \\ \hline 13 & Life and health insurance & \$150 \\ \end{tabular}

[Answered] Given [tex]f(x)=x^2-2 x[/tex], identify the axis of symmetry, vertex, [tex]x[/tex]-intercepts, [tex]y[/tex]-intercept, and the range of the function. Axis of Symmetry Vertex [tex]x[/tex]-intercepts [tex]y[/tex]-intercept Range

[Answered] The frequency table was made using a bag containing slips of paper that are numbered [tex]$1,2,3,4$[/tex], or 5. | [tex]x[/tex] | [tex]f[/tex] | |---|---| | 1 | 4 | | 2 | 12 | | 3 | 20 | | 4 | 32 | | 5 | 12 |

[Answered] In the final round of the Western Baking Challenge, Max and Colette must each create a display of iced cookies. Colette's cookies cooled off first, and she begins icing them at a rate of 3 cookies per minute. After Collette has iced 12 cookies, Max starts icing his cookies at a rate of 5 cookies per minute. Soon, he will catch up to Colette and the two will have iced the same number of cookies. Which equation can you use to find [tex]$m$[/tex], the number of minutes it will take Max to catch up to Colette? [tex]$3 m+12=5 m$[/tex] [tex]$5 m+3=12 m$[/tex] How long will it take Max to catch up to Colette? Simplify any fractions. $\square$ minutes

[Answered] $1 \frac{3}{5}-1 \frac{3}{5}$

[Answered] At his school's spring carnival, Porter is in charge of the balloon-launcher contest. In this contest, each team builds a catapult to launch water balloons at a target. Porter gives a bucket of 14 water balloons to each team in the contest. In all, he gives out 70 water balloons. Which equation can you use to find the number of teams [tex]$t$[/tex] in the contest? [tex]$t-14=70$[/tex] [tex]$t+14=70$[/tex] [tex]$\frac{t}{14}=70$[/tex] [tex]$14 t=70$[/tex] Solve this equation for [tex]$t$[/tex] to find the number of teams in the contest. $\square$ teams

[Answered] Write expressions to represent the length and width of Melissa's vegetable garden.