To ship a 2-pound item it costs $6.09. to ship a 7 pound item it costs $8.84. find the rate of change.

Rate of change = $0.55/pound

Step-by-step explanation:

Given:

To ship a 2 pound item it costs $6.09.

To ship a 7 pound item it costs $8.84.

So, we can put the data in co-ordinates such that co-ordinate represents the mass of the item in pounds and co-ordinate represents the cost of the item in dollars.

So, we will have two points

Rate of change is the slope of the line joining the points and is given by:

∴ Rate of change = $0.55/pound

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.