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01:15

Jinseop S.

$3-12=$ Using Models Use the model given to answer the questions about the object or process being modeled. The sales tax $T$ in a certain county is modeled by the formula $T=0.06 x .$ Find the sales tax on an item whose price is $\$ 120 .$

0:00

Kelli P.

Making Models : Write an algebraic formula that models the given quantity. 15. The cost $C$ of purchasing $x$ gallons of gas at $\$ 3.50$ a gallon

02:33

Taylor S.

Using Models Use the model given to answer the questions about the object or process being modeled. The power $P$ measured in horsepower (hp) needed to drive a certain ship at a speed of $s$ knots is modeled by $$P=0.06 s^{3}$$ (a) Find the power needed to drive the ship at 12 knots. (b) At what speed will a 7.5 -hp engine drive the ship?

00:50

Making Models : Write an algebraic formula that models the given quantity. 14. The average $A$ of two numbers $a$ and $b$

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Let's look at the absolute value equation. V Plus eight minus five equals two. Now, to work this one, we need to go ahead, and we need to add five to both shots. So the absolute value of V Plus eight equals seven. This is what I'm going to work out twice. So we're gonna work out V Plus eight equal seven will subtract eight on both sides so they equals negative one. The second time I work it, I'm gonna have the plus eight equals Negative. Seven. We're going to subtract eight on both sides. The equals negative. 50. So my solution set is negative. One negative 15.

Linear Equations and Functions

Linear Equations and Inequalities

Matrices and Determinants

Quadratic Equations

Applications of Trigonometric Functions

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