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01:13

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.

0:00

Kyle I.

Using Models Use the model given to answer the questions about the object or process being modeled. The distance $d$ (in mi) driven by a car traveling at a speed of $v$ miles per hour for $t$ hours is given by $$d=v t$$ If the car is driven at 70 milh for 3.5 $\mathrm{h}$ , how far has it traveled?

03:34

01:04

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we're being asked to evaluate to given expression when X is equal to four. So our expression is seven X minus eight. Well, in order to do this, we're going to first substitute X equals four into our expression and all I'm doing off to the right is reminding us what our order of operations are. Just in case we need so again to start this problem, we're going to substitute four in place of X. And remember, when you substitute it, then you should put in parentheses, So we're gonna have seven times four and then minus eight. Now, we just need to follow the order of operations. So Step one, we don't have a grouping symbols. Well, we do, but it's only to indicate multiplication. Step two exponents, but we don't have any Step three multiplying or divide. Well, we do have multiplication. We have seven times four, which is 28. So we're gonna be left with 28 minus eight. And now we just have one operation and 28 minus eight is equal to 20. So what we found is the value of seven x minus e. When X is equal to four is 20

Linear Functions

Solve Linear Inequalities

Functions

Systems of Equations and Inequalities

Graph Linear Functions

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