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asambeis [7]
3 years ago
8

A repairman charges $40.50 per hour. this can be written as $40.50x.evaluate this expression if he works for 5 hours.

Mathematics
2 answers:
sammy [17]3 years ago
7 0
I think the answers 3 if your lolking so see hkw much he earns in 5 houers
crimeas [40]3 years ago
3 0
To solve this equation, all you need to do is plug in the amount of hours the repairman works for x.  

So, when the repairman works for 5 hours, 40.50x=40.50(5).

When you multiply 40.50*5, you get 202.5.

When you convert this back to dollars and cents, your final answer is $202.50.

If the repairman works for 5 hours, then he will earn/charge $202.50.

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If f(x) = 2x+7 and g(x) = -3x+5, what is f(g(1))?
Murrr4er [49]

Answer:

f(g(1))=11

Step-by-step explanation:

So we have the two functions:

f(x)=2x+7\text{ and } g(x)=-3x+5

And we want to find f(g(1)).

So, let's find g(1) first:

g(x)=-3x+5

Substitute 1 for x:

g(1)=-3(1)+5

Simplify:

g(1)=-3+5

Add:

g(1)=2

So:

f(g(1))=f(2)

Now, substitute 2 for x in f(x):

f(x)=2x+7\\f(2)=2(2)+7

Multiply:

f(2)=4+7

Add:

f(2)=11

So:

f(g(1))=11

8 0
3 years ago
Solve for x. 7x - 3/8 = 6x - 5/8
Mnenie [13.5K]
Solve for x by simplifying both sides of the equation, then isolating the variable
x= -1/4
8 0
3 years ago
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Plzz add an explanation for it too
DIA [1.3K]

Answer:

A     $0.02

Step-by-step explanation:

Let's solve how much does it cost to have a bulb on for an hour. ⇒ 120 watt = 0.1 kilowatt per hour which costs 0.20 per kilowatt per ⇒ 0.1 kilowatt per hour* 0.20 = 0.02 dollars in an hour.

3 0
2 years ago
At a farmers market, Samuel bought 3 pounds of apples for x dollars per pound and 2 bags of spinach for y dollars each. The next
andre [41]

Answer:

A. 8x+5y

Step-by-step explanation:

First day: 3x+2y

Second day: 5x+3y

Add both expressions together.

(3x+2y)+(5x+3y) =

= 3x+2y+5x+3y=8x+5y

Hope this helps!

If not, I am sorry.

6 0
2 years ago
What is the reciprocal of 1 2/3?
kiruha [24]
1 2/3 is the same as 5/3, so the reciprocal is 3/5
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3 years ago
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