The price of a gallon of gas dropped from the summer high price of $3.65 to the winter low price of $2.54. What is the percent of change in the cost of gas?

30.4%

Step-by-step explanation:

Use the percent change formula:

(difference / original) x 100

Find the difference:

3.65 - 2.54

= 1.11

Then, plug in the difference and original:

(difference / original) x 100

(1.11 / 3.65) x 100

= 30.4

So, the percent change in the cost of gas is 30.4%

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°