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3 years ago

If you rent a car for one day and drive it for 100 miles, the cost is $40.00. If you drive it 220 miles, the cost is $46.00.

1 answer:

7 0

Now, if x = 300 miles, then

y= 1/20*300 + 35

y = 15 + 35

y = 50, therefore it would cost $50.00 to drive the rental car 300 miles.

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2.38+4.89=3+ _ <br><br>changing expressions??

Lerok [7]

Add 2.38 and 4.89 then subtract 3 giving you 4.27

3 0

3 years ago

A local hamburger shop sold a combined total of 436 hamburgers and cheeseburgers on Wednesday. There were 64 fewer cheeseburgers

jasenka [17]

436 hamburgers and cheeseburgers sold Wednesday.
64 fewer cheeseburgers.

436/2= 218
218-64= 154

154 cheeseburgers were sold Wednesday.

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2 years ago

Solve the inequality-7x>21.what is the graph of the solution?

uranmaximum [27]

-7x>21
divide both sides by -7

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3 years ago

Each week. You make $10.00 but you spend $3.00 and save the rest. How much would you save in 8 weeks?

Marianna [84]

10*8=80
3*8=24
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7 0

3 years ago

Read 2 more answers

Prove that if r is any rational number, then 3r2 − 2r + 4 is rational. The following properties may be used in your proof. Prope

ziro4ka [17]

Given:

Expression is

$3r^2-2r+4$

To prove:

If r is any rational number, then $3r^2-2r+4$ is rational.

Step-by-step explanation:

Property 1: Every integer is a rational number. It is Theorem 4.3.1.

Property 2: The sum of any two rational numbers is rational. It is Theorem 4.3.2.

Property 3: The product of any two rational numbers is rational. It is Exercise 15 in Section 4.3.

Let r be any rational number.

We have,

$3r^2-2r+4$

It can be written as

$3(r\times r)-2r+4$

Now,

3, -2 and 4 are rational numbers by property 1.

$r^2=r\times r$ is rational by Property 3.

$3r^2\text{ and }-2r$ are rational by Property 3.

$3r^2+(-2r)+4$ is rational by property 2.

So, $3r^2-2r+4$ is rational.

Hence proved.

6 0

3 years ago