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3 years ago

If f(x)=2x+5 and g(x)=x²+5, evaluate the functions:

Mathematics

2 answers:

Allushta [10]3 years ago

4 0

Answer:

f(-3) = -1

g(-3) = 14

Step-by-step explanation:

f(x) = 2x+5

f(-3) = 2(-3) + 5

f(-3) = -6 + 5

f(-3) = -1

g(-3) = -3^2 + 5

g(-3) = 9 + 5

g(-3) = 14

Ostrovityanka [42]3 years ago

3 0

Answer:

f(-3) = -1

g(-3) = 14

Step-by-step explanation:

plug -3 for x to get the answer

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Clive and Erica both have part-time jobs where they get paid by the hour. Erica makes more than Clive. The number of dollars, dd

SIZIF [17.4K]

Missing Options:

A. Erica's graph is incorrect, because the slope should be greater than 9.5.

B. Erica's graph is incorrect, because the y-intercept should be greater than 9.5.

C. Erica's graph is correct, because the slope should be less than 9.5.

D. Erica's graph is correct, because the y–intercept should be less than 9.5.

Answer:

A. Erica's graph is incorrect, because the slope should be greater than 9.5.

Step-by-step explanation:

Given

Clive:

$d = 9.5h$

Erica:

$m = 9$ --- slope

$b =0$ --- y intercept

First, we need to determine the equation of Erica's earnings using

$d = mh + b$

Where

m = slope = 9

b = y intercept = 0

So, the equation becomes

$d = 9 * h + 0$

$d = 9h + 0$

$d = 9h$

This implies that Erica earns 9 dollars per hour

For Clive:

$d = 9.5h$

This means that Clive earns 9.5 dollars per hour

From the question, we understand that Erica earns more than Clive.

So, we can conclude that Erica's graph is incorrect because the slope must be greater than 9.5.

When the slope is greater than 9.5, then she earns more than Clive.

6 0

3 years ago

Janette measures the heights in inches of some of the flowers in her garden to see which ones are growing more. The heights are

jeyben [28]

Answer:

i think it is A

Step-by-step explanation:

3 0

3 years ago

SALE 80% OFF! The sale price of a furnace is $188. What was the original price?

natta225 [31]

Answer:

338.4Step-by-step explanation:

If you do 80 percent of 188, its 150.4. Then, you add 150.4 to 188. thats 338.4

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3 years ago

The weight of a baby measured in pounds doubles. Does its weight measured in kilograms also double? Explain your answer.?

kvv77 [185]

bearing in mind that 1Kg ≈ 2.2lbs.

so, if a baby is say 2.2lbs, and then it doubles in weight, to 4.4lbs.

well, we know when the baby was 2.2lbs it was exactly 1Kg, but when it went up to 4.4lbs, is it 2Kgs? well, yes, 2Kgs = 2.2 + 2.2 or 2(2.2).

so, multiplying the lbs value by some factor, will retain the Kg:lbs ratio.

7 0

3 years ago

I need help with this

baherus [9]

Answer:

0.4

Step-by-step explanation:

drawing a triangle with each side correspondent to each of its measurements all you are doing is dividing the side that you would want to find its scale factor of, which in this case you would take AB and DE and have AB/DE dividing that and getting 0.4 as its scale factor.

6 0

3 years ago