Question

#58 and 60 plz help

Answer 1

so ur just substituting x = a for the equation?

Answer 2

for what number

Answer 3

#58

Answer 4

oh im sooo sorry I meant 56

Answer 5

it's similar just substitute x= 4 into your equation then do same for the other number

Answer 6

okso the first one is 1/2 and the second is 1/6

Answer 7

isn't there more to it ?

Answer 8

what does the top of page say?

Answer 9

find he average rate of change btw the points

Answer 10

yeah there a formula i'm sure to that so forget what i said earlier lol

Answer 11

lol ok I did that first when I started working on it

Answer 12

do u have the answer to problem 55

Answer 13

I can chek the back of the book

Answer 14

5

Answer 15

what I got for 56 was.... 1/8-2 - 1/4-2 /8-4 then solved it and I got -3/4

Answer 16

\[(1\div(8-2) -1/(4-2))/8-4\]

Answer 17

i'm not much help sorry

Answer 18

how about number 60

Answer 19

well i think a part u just plug in numbers and the orginal deposit and d15 is the amount after 15 years. B part u set up the equation just plug in 17000 as the D(t) and solve for t to find the years it takes to make that amount

Answer 20

I don't get that

Answer 21

d(0) = 3500 + 15t^2 should get 3500 for original deposit

Answer 22

17000 = 3500 +15t^2 solve for t

Answer 23

d(0) = 3500 and d(15)= 3725 ?

Answer 24

on 56 the way u solved it was (1/6 - 1/2) / 4 is not -3/4

Answer 25

15(15)^2 +3500 does not equal 3725

Answer 26

6875

Answer 27

yes

Answer 28

so they represent amount deposited?

Answer 29

it's the total amount deposited

Answer 30

ok how about b and c

Answer 31

i told u on b solve for t and gave u the equation

Answer 32

I got 13500+15t^2

Answer 33

13500 = 15t^2

Answer 34

so how do I find the year

Answer 35

divide to get t^2 by itself then square root both sides

Answer 36

it=30

Answer 37

correct wtg

Answer 38

what is (1/6 - 1/2) /4 problem 56

Answer 39

-2?

Answer 40

I got -3/4 I don't know

Answer 41

(1/6-3/6)/(4/1)

Answer 42

no it's not -3/4

Answer 43

-2/6 / 4/1 ?

Answer 44

so (-2/6 )/(4/1) can be rewritten as (-2/6) (1/4)

Answer 45

so its -1/12

Answer 46

yes correct

Answer 47

ok for 60b we got 30 but hwo do we get the year

Answer 48

well u get + - 30 but -30 makes no sense so it's 30 = t ...they tell us t equals years

Answer 49

I don't get that

Answer 50

when square root both sides u always get a positive and negative number

Answer 51

ya I know how you got+30 but is 30 the final answer its not a year

Answer 52

they tell us t = 0 for 1995 then t= 1 for 1996 so it's years

Answer 53

well it would tak e 30 years of deposits to reach that specific amount of 17000

Answer 54

oh ok

Answer 55

so for c is it 3500+15(15)^2 - [3500+15(0)^2]

Answer 56

over 15-0

Answer 57

i think so that is how u were doing problem 56 avg rate change

Answer 58

does it represent the deposit?

Answer 59

i think it represents the avg rate deposited per year