beth would like to save money on her monthly copy machine bill and considers switching to a different plan. a second plan costs 175$ per month and includes 100 copies. each copy above 100 copies costs an additional $0.10. this equation can be used to find the total cost, y , based on the number of copies, x , where x>100. y=175+0.10(x-100). b. determine when the two plans cost the same amount . show your work or explain how you know?

where is the picture

step-by-step explanation:

your answer is  

a.

5

step-by-step explanation:

$320 to $405

step by step explanation:

in one day he earns between $64 and $81

therefore if he works for 5 days, he will earn between 64 x 5 to 81 x 5

= $320 to $405

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²