Question

PLEASE HELP MAX POINTS AND BRAINLIEST!!!

Answer 1

f(d) = 11(1.01)^d

Part A:

f(d) = 11.79

11.79=11(1.01)^d (1.01)^d = 11.79/11 (1.01)^d = 1.071818 d = log 1.071818 /log 1.01

d = 6.97

Part B:

y- intercept is obtained when domain = 0

d = 0 ⇒ f(0) = 11(1.01)^0 = 11*1 = 11

f(d) = 11

Part C:

Average rate of change

A.f/Ad=

(f(7)-f(2))/(7-2) = (11(1.01)^7-11(1.01)^2)/5 = 0.57/5 =

Answer 2

#1

As d is days

So days can't be negative

hence domain is W or Whole numbers set.

But according to the equation

• y=7(1.06)^d
• 13.29=7(1.06)^d
• 1.06^d=1.898
• dln1.06=ln1.898
• d=1.79

Round to next whole as it's no of days

d=2

Domain=[2,oo)

#b

Put d=0

f(0)

• 7(1.06)^(0)
• 7

It passes through (0,7)

But 0 is not in domain ,hence no y intercept in real

#C

f(11)

• 7(1.06)¹¹
• 13.28

f(4)

• 7(1.06)⁴
• 8.83

Rate of change

• f(11)-f(4)/11-4
• 13.28-8.83/7
• 0.6

It represents change in radius