Beginning at sunrise, the temperature rose 2.8 degrees per hour.

how long did it take for the temperature to rise a total of 19.18 degrees?

a.0.682 h

b.0.685 h

c.6.820 h

d.6.850 h

Temperature rose for 2.8 degrees = 1 hour

for temperature rose for 1 degree = 1/2.8 hour

Now, for 19.18 degrees, it would be = 1/2.8 * 19.18 = 6.850 h

D)OPTION D is your answer

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)