Ascientist is measuring the temperature change and a chemical compound the temperature dropped 11 fahrenheit per hour from the original temperature after four hours the temperature was 90°f find the compounds original temperature

134°F

Step-by-step explanation:

Given : A scientist is measuring the temperature change and a chemical compound the temperature dropped 11° Fahrenheit per hour from the original temperature .

Let x be the original temperature.

Then , the compound temperature after t hours is given by :_

At t= 4 hours and x= 90°F, we have

Hence , the  compounds original temperature = 134°F

coins of silver or gold

step-by-step explanation:

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.