It takes robin 3 hours to mow the lawn and 1 hour to pull the weeds in her garden. she does both four times a month. use a problem-solving plan to find how much time she spends on yard work in a month.

16 hours.

Step-by-step explanation:

There is 30 days in a month, if Robin takes 3 hours to mow the lawn and does this four times a month that would be 12 hours, if she takes 1 hour to pull weeds and does this 4 times as well that would be 4. 4+12 would equal 16 hours.

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

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)