The answer is about 43. In other words, it was going 43 mph.
All you have to do is follow PEMDAS (if you don't know what that is, search it up).
-2-5(4n-6)=-132
Distribute the 5 to everything in the parentheses.
-2-20n+30= -132
Combine like terms.
-20n+28 = -132
Subtract 28 from both sides.
-20n = -160
Divide by -20 on both sides.
n = 8
Answer: $1.20
Step-by-step explanation:
To calculate sales tax, multiply the price by the tax percentage.
$30 x 0.04 (4% sales tax) = $1.20
Answer:
<h2>(1, 5)</h2>
Step-by-step explanation:
![\left\{\begin{array}{ccc}y=3x+2&(1)\\y=5x&(2)\end{array}\right\\\\\text{substitute (2) to (1):}\\\\5x=3x+2\qquad\text{subtract 3x from both sides}\\2x=2\qquad\text{divide both sides by 2}\\x=1\\\\\text{Put the value of x to (2):}\\\\y=5(1)=5](https://tex.z-dn.net/?f=%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7Dy%3D3x%2B2%26%281%29%5C%5Cy%3D5x%26%282%29%5Cend%7Barray%7D%5Cright%5C%5C%5C%5C%5Ctext%7Bsubstitute%20%282%29%20to%20%281%29%3A%7D%5C%5C%5C%5C5x%3D3x%2B2%5Cqquad%5Ctext%7Bsubtract%203x%20from%20both%20sides%7D%5C%5C2x%3D2%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%202%7D%5C%5Cx%3D1%5C%5C%5C%5C%5Ctext%7BPut%20the%20value%20of%20x%20to%20%282%29%3A%7D%5C%5C%5C%5Cy%3D5%281%29%3D5)