Marcos purchases a top-up card for his pre-paid cell phone. his remaining balance, b, can be modeled by the equation b=40−0.05n, where n is the number of minutes he's talked since purchasing the card.
a) how much money was on the card when he purchased it? $. which intercept is this?
b) how many minutes will he have talked when he runs out of money? $. which intercept is this?
c) what is the slope of this equation? . what are the units on the slope?

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

answer: 819.89 miles across america

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !