Only answer if you actually know the answer, and is able to explain everything cait purchased a $20 item at a store. she uses a coupon to receive a 15% discount, and she pays a 6% sales tax on item. she calculates the total cost, in dollars, of the item using the expression: (1.15)(1.06)(20) a. describe the error in the expression cait used for her calculations. b. show or explain how you would calculate the total cost of cait's purchase.

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

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: