Ask question

Ask question

All categories

3 years ago

6

Your lunch bill is $19.75. A 5% sales tax will be added, and you want to give a tip of about 20% of $19.75. Estimate how much yo

u will pay for lunch.

2 answers:

adelina 88 [10]3 years ago

7 0

Normallly you don't tip on the tax nor do you tax on tip
find 20% and 5% of 19.75
find 20% of 19.75 and add to 5% of 19.75
hmm, we can undistribute
19.75(20%+5%)
19.75(25%
find 25% of 19.75
25% of 19.75=0.25 times 19.75=4.9375
add that to 19.75
4.9375+19.75=24.6875
round
price to pay for lunch is $24.69

nalin [4]3 years ago

3 0

The estimated price you will pay for lunch is $24.69.

You might be interested in

Consider the parabola given by the equation: f(x) = 4x² - 6x - 8 Find the following for this parabola: A) The vertex: Preview B)

jeyben [28]

Answer:

The vertex: $(\frac{3}{4},-\frac{41}{4} )$

The vertical intercept is: $y=-8$

The coordinates of the two intercepts of the parabola are $(\frac{3+\sqrt{41} }{4} , 0)$ and $(\frac{3-\sqrt{41} }{4} , 0)$

Step-by-step explanation:

To find the vertex of the parabola $4x^2-6x-8$ you need to:

1. Find the coefficients <em>a</em>, <em>b</em>, and <em>c </em>of the parabola equation

<em> $a=4, b=-6, \:and \:c=-8$ </em>

2. You can apply this formula to find x-coordinate of the vertex

$x=-\frac{b}{2a}$ , so

$x=-\frac{-6}{2\cdot 4}\\x=\frac{3}{4}$

3. To find the y-coordinate of the vertex you use the parabola equation and x-coordinate of the vertex ( $f(-\frac{b}{2a})=a(-\frac{b}{2a})^2+b(-\frac{b}{2a})+c$ )

$f(-\frac{b}{2a})=a(-\frac{b}{2a})^2+b(-\frac{b}{2a})+c\\f(\frac{3}{4})=4\cdot (\frac{3}{4})^2-6\cdot (\frac{3}{4})-8\\y=\frac{-41}{4}$

To find the vertical intercept you need to evaluate x = 0 into the parabola equation

$f(x)=4x^2-6x-8\\f(0)=4(0)^2-6\cdot 0-0\\f(0)=-8$

To find the coordinates of the two intercepts of the parabola you need to solve the parabola by completing the square

$\mathrm{Add\:}8\mathrm{\:to\:both\:sides}$

$x^2-6x-8+8=0+8$

$\mathrm{Simplify}$

$4x^2-6x=8$

$\mathrm{Divide\:both\:sides\:by\:}4$

$\frac{4x^2-6x}{4}=\frac{8}{4}\\x^2-\frac{3x}{2}=2$

$\mathrm{Write\:equation\:in\:the\:form:\:\:}x^2+2ax+a^2=\left(x+a\right)^2$

$x^2-\frac{3x}{2}+\left(-\frac{3}{4}\right)^2=2+\left(-\frac{3}{4}\right)^2\\x^2-\frac{3x}{2}+\left(-\frac{3}{4}\right)^2=\frac{41}{16}$

$\left(x-\frac{3}{4}\right)^2=\frac{41}{16}$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

$x_1=\frac{\sqrt{41}+3}{4},\:x_2=\frac{-\sqrt{41}+3}{4}$

4 0

2 years ago

X/5 + 7 = 16 X= answer

Debora [2.8K]

Step-by-step explanation:

x/5 + 7 = 16

x/5 = 16 - 7

x/5 = 9

x = 9×5

= 45

6 0

3 years ago

Read 2 more answers

Is Claire has a half a gallon of milk left in the fridge and she wants to drink 10 ounces of milk a day how many days of milk do

Airida [17]

6.4 days will how long the half gallon of milk will last.

8 0

2 years ago

For 5 points and brainliest to the best correct answer, find the missing measure.<br> Thank you

Kitty [74]

Answer:

Missing measure is 79º

Step-by-step explanation:

180-101

8 0

1 year ago

Read 2 more answers

Apply the distributive property to create an equivalent expression.

Amanda [17]

The distributive property: a(b + c) = ab + ac

(-7c + 8d)0.6 = (-7c)(0.6) + (8d)(0.6) = -4.2c + 4.8d

7 0

3 years ago

Read 2 more answers