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02:07

Taylor S.

Suppose gas costs $\$ 3.50$ a gallon. We make a model for the cost $C$ of buying $x$ gallons of gas by writing the formula $C=$ _________.

01:04

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.

00:55

Using Models Use the model given to answer the questions about the object or process being modeled. The volume $V$ of a cylindrical can is modeled by the formula $$V=\pi r^{2} h$$ where $r$ is the radius and $h$ is the height of the can. Find the volume of a can with radius 3 in. and height 5 in.

00:26

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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pound inequality two x modest three is less than 11 or negative. Eight x modest. 10 is less than negative 82. So this statement isn't or which means our solutions. One would have to be true or the other, and it's gonna have both of them aren't gonna work. So let's go ahead and start solving each of these individually. So two X minus three is less than 11. We're gonna add three on both sides. So two X is less than 14. We're gonna divide by two X is less than seven for a second. One will go ahead and bring her or down. We're gonna add 10 to both sides. So negative eight x is less than negative. 72. We're gonna divide by negative eight. Which means our sign is gonna flip so X is going to be greater than positive. Not so Now let's look at a number one. So let's just do one, three, five, seven, nine, 11, 13 and 15. Okay, so here's our number line. So X is less than seven. That's gonna be an open circle on the seven, and it's gonna be going to the left because we're talking about numbers less than seven and then X is greater than non. It's open circle again, going to the right because we're talking about numbers greater than nine. So because these arrows air going away from each other, we haven't or statement.

Linear Equations and Functions

Linear Equations and Inequalities

Matrices and Determinants

Quadratic Equations

Applications of Trigonometric Functions

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