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3 years ago

10

Could someone pls help. Please

2 answers:

xxTIMURxx [149]3 years ago

7 0

Answer:

D

Step-by-step explanation:

store A: 1 for $2.00

store B: 1 for $1.67

store C: 1 for $1.60

store D: 1 for $ 1.25

now multiply them by 30

2 times 30: $60

1.67 times 30: $50.1

1.60 times 30: $48

1.25 times 30: $37.5

nordsb [41]3 years ago

5 0

Answer:

D

Step-by-step explanation:

You should know the price of one bag in each store , the least price will be the answer first store , one bag costs 4/2=2 dollars second store, one bag costs 5/3=1.67 dollars third store, one bag costs 8/5=1.6 dollars fourth store , one bag costs 1.25 dollars"the least one"

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What is the simplified form of the expressions? a. −6a2b−1 b. 5/y−3

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3 years ago

Which is a stretch of an exponential decay function?

Marta_Voda [28]

Answer:

The correct option is C. The function $f(x)=\frac{5}{4}(\frac{4}{5})^x$ is a stretch of an exponential decay function.

Step-by-step explanation:

The general form of an exponential function is

$f(x)=ab^x$

where, a is the initial value and b is the growth factor.

If b<1, then it represents a decay function and if b>1, then it represents a growth function.

Let k be a stretch and compression factor.

$g(x)=kf(x)$

If k<1, then it represents vertical compression and if k>1, then it represents vertical stretch.

In third function

$f(x)=\frac{5}{4}(\frac{4}{5})^x$

$k > 1$

$b < 1$

Therefore the function $f(x)=\frac{5}{4}(\frac{4}{5})^x$ is a stretch of an exponential decay function.

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