A science class is tracking the progress of plant growth. The classstarts the experiement with a plant 5 cm tall. The plant grows 2 cm each day. The model for plant growth "y" is given by: y=2x+5. What is the meaning of the y-intercept in this equation? a. The y-intercept is the starting date. b. The y-intercept is the growth rate of the plant. c. The y-intercept is the starting height of the plant. d. The y-intercept is the largest height the plant can grow.

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

.

step-by-step explanation:

.

according to egenuity the answer is

step-by-step explanation:

d. 344.22