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Kelly S.

July 23, 2021

so in this type of equation will the answer always be a positive number?

Missouri State University

Harvey Mudd College

Baylor University

00:52

Amy J.

The model $L=4 S$ gives the total number of legs that $S$ sheep have. Using this model, we find that 12 sheep have $L=$ __________ legs.

01:04

Taylor S.

Using Models Use the model given to answer the questions about the object or process being modeled. Mintonville School District residents pay a wage tax $T$ that is modeled by the formula $T=0.005 x .$ Find the wage tax paid by a resident who earns $\$ 62,000$ per year.

00:57

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

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we're being asked to evaluate to given expression when X is equal to negative seven. Remember to evaluate expressions. We're going to start by substituting negative seven in place of both of our exes. So when we do this, we're gonna have the absolute value off two times negative seven and then minus the absolute value off negative seven plus 10. All right, so now we substitute then to evaluate this expression, we now need to follow the order of operations. Remember, Step One is to evaluate inside our grouping symbols Well, and absolute value is considered to be a grouping. Simple. So the first thing we have to dio is multiply two times negative seven. Well, two times negative seven is negative. 14. So we're left with the absolute value of negative 14. We'll bring down AR minus sign, and then we need to evaluate inside our second absolute value. Simple. Well, negative seven plus 10 is equal deposit of three. So we're left with the absolute value of three. Now that we have evaluated insider absolute value symbols, we have to go ahead and take the absolute value of both of these numbers. Well, the absolute value of negative. 14 is positive. 14 because it's 14 units away on the number line, minus the absolute value of three, while the absolute value of three is equal to three because it's three units away on the number line. And now, as you can see, we only have one operation left. We have 14 minus tree, which is equal to 11. So what we found is the value of our given expression when X is equal to negative, seven is positive 11.

Linear Functions

Solve Linear Inequalities

Functions

Systems of Equations and Inequalities

Graph Linear Functions

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