Joe buys a sub sandwich that is 8 1/2 feet long. The cost per foot of sandwich is $4.20, including tax. What is the total cost, in dollars, of the sub sandwich.

35.7$

Step-by-step explanation:

4.20(x)

4.20(8.5)

35.7$

y-y1=4(x-x1)

step-by-step explanation:

this is point-slope form since you only have 4 as the slope it goes in place of m

hope this : )

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,