Luke and Isabella make scale drawings of a fountain. The scale from the fountain to Isabella’s drawing is 6 m to 3 cm. The height of the fountain in Isabella’s drawing is 5 cm. The scale from the fountain to Luke’s drawing is 5 m to 2 cm. What is the height of the fountain in Luke’s drawing?Isabella’s scale is 6 m to 3 cm, so the scale factor from her drawing to the actual fountain is , or 2Since 5 32is 10, the actual fountain is 10 m tall. Luke’s scale is 5 m to 2 cm. The actual fountain is 10 m tall. Since 10 is 5 drawing to the actual fountain is 2.Since 2 32 is 4, the height of the fountain in Luke’s drawing is 4 cm.1The width of the fountain in Luke’s drawing from the Example is 2 cm. What is the width of the fountain in Isabella’s scale drawing? Show your work.

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step-by-step explanation:

the answer is 13 cm

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

a) 40 more; b) old factory:   10%, new factory:   16%; c) week 4

explanation:

a) at week 0, we see in the graph that the new factory produces 190 specialty items.  

using the function, substituting 0 in for w,

this is a difference of 230-190 = 40.

b) the function for the old factory is written in the form f(x) = a(1+r)ˣ, where a is the original amount, x is the amount of time and r is the growth rate.   the equation for the old factory is ; 230 is in place of a and is the original amount; w is the amount of time; which means 1+r = 1.1.   this means that r must be 0.1 or 10%.

for the new factory, we find the percent of increase to find the growth rate; the formula for this is

between the first two points, the amount of change is 220-190 = 30; this gives us

30/190 = 0.158 ≈ 0.16 = 16%

c) at week 0, the old factory has 230 while the new factory has 190.

at week 1, the old factory has 230(1.1) = 253 while the new factory has 220.

at week 2, the old factory has 230(1.1²) = 278.3 while the new factory has 252.

at week 3, the old factory has 230(1.1³) = 306.13 while the new factory has 290.

at week 4, the old factory has 230(1.1⁴) = 336.743 while the new factory has 337.   this is the first week that the new factory surpasses the old.