A. lusaka is a fast growing town in zambia. the population of lusaka appears to follow
the formula given below;
p(t)=20et
where p is the population in thousands and t is the number of years since 1980.r is
the growth rate and was found to be at 10%.
i. what was the population of lusaka in 1999?
[3 marks]
ii. what will the population of lusaka in 2020?
[3 marks]
ill. in which year was the population 105 000?
[5 marks]
iv. if the population of lusaka in 2015 was 182 000,what was the growth rate?

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

~

a - base

b - exponent

so,

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation: