Ascientist is measuring the temperature change in a chemical compund. the temperature dropped 11 degrees per hour from the original. after 4 hours, the temperature was 90 degress. find the compounds original tempature

33.5

Step-by-step explanation:

let original temperature be T

If after 1 hr temperature drops by 11, then the rate of temperature drop is 11 per hr.

After 4 hours, temperature will drop to 4(T-11).

if temperature after 4 hrs is 90, then

4(T-11)=90

T-11=90/4

T=(90/4) + 11

T=33.5

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.