Please help, I don’t understand it so explain don’t just put the answer if u can lols

80 1/2 days between first and second son

This in days is 1-81 days to finish one house.

Step-by-step explanation:

1st Son  = 45 + 18 + 27 = 90  saved the father 18 days. 27 of 45 = 60% inv 40%

2nd Son  = 45 + 9 +36 = 90 saved the father 9 days = 36 of 45 = 80% inv 20%

1st Son  40% needs to be increased 60% to complete house

2nd Son  20% needs to be increased 80% to complete house

1st Son  House takes Son 1 in days =  27 x 1.60% = 43.2 + 27 = 60.2

2nd Son House takes Son 2 in days = 36 x 1.80%= 64.8 + 36 = 100.8

60.2+100.8 = 161 days.

=161 days for 2 homes.

= 80 1/2 days for one home.

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is