While christine was visiting her sister in ashland she bought a microscope that was marked down 60% from the original price of 75$. if the sales tax in ashland is 10% what was the total cost of the microscope?

The total cost of the microscope=$37.50

Step-by-step explanation:

Step 1: Get the discount amount

Discount amount=Discount rate×original price

where;

original price=$75

discount rate=60%

replacing;

Discount amount=(60/100)×75=45

Discount amount=$45

Step 2: Calculate sale price

The sale price can be calculated as;

sale price=Original price-discount amount

where;

discount=$45

original price=$75

replacing;

Sale price=(75-45)=$30

Step 3: Calculate tax amount

Tax=10% of original price=(10/100)×75=7.5

Step 4: Total cost of microscope

Total cost=sale price+tax

where;

sale price=30

tax=7.50

replacing;

Total cost=(30+7.50)=37.50

The total cost of the microscope=$37.50

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.