The graph of f(t)=7•2^t shows the value of a rare coin in year t. what is the meaning of the y-intercept? a. every year, the coin is worth 7 more dollars b. when it was purchased (year 0), the coin was worth $7 c. in year 1, the coin was worth 14$ d. when it was purchased (year 0), the coin was worth $2

Option B

When it was purchased (year 0) the coin was worth $7

Step-by-step explanation:

we have

This is a exponential function of the form

where

a is the initial value

b is the base

In this problem we have

a=$7

b=2

b=1+r

so

2=1+r

r=1

r=100%

The y-intercept is the value of the function when the value of x is equal to zero

In this problem

The y-intercept is the value of a rare coin when the year t is equal to zero

therefore

The meaning of y-intercept is

When it was purchased (year 0) the coin was worth $7

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!