Question

Please answer the question it’s for my math SAT

Answer 1

Answer: D.

This is tricky.

Think of the equation as an equation for a line

where in this case.      

$C=5/9(f-32)$

or

$C=5/9f-5/9(32)$

You can see the slope of the graph is $5/9$  which means that for an increase of 1 degree Fahrenheit, the increase is $5/9$.

$c=5/9(f)$

$c=5/9(1)=5/9$

Therefore, statement I is true. This is the equivalent to saying that an increase of 1 degree Celsius is equal to an increase of $9/5$ Degrees Fahrenheit

$c=5/9(f)$

$1=5/9(f)$

$f=9/5$

Since $9/5=1.8$ Statement 2, is true.

The only answer that has both statement I and statement II as true is D, but if you have time and want to be absolutely thorough, you can also check to see if statement III (an increase of $5/9$ degree Fahrenheit is equal to a temperature increase of 1 degree Celsius) is true:

$c=5/9(f)$

$c=5/9(5/9)$

$c=25/81$ which is ≠ 1)

An increase of $5/9$ degree Fahrenheit leads to an increase of $25/81$

not 1 degree, Celsius, and so Statement III is not true.

The final answer is D.

I hope this helped x

Answer 2

Answer:

D!!!!

Step-by-step explanation: