Need on question solve for b a=1/2bh

Ifurniture stores having a weekend sale and is offering 20% discount on patio chairs and table the sales tax on furniture is 6.25 using function composition how can you represent the total amount a that you would need to pay for this furniture that cost x dollars

In the triangles, bc =de and ac fe. if the mzc is greater than the mze, then ab isdfelth

What is 140% of 25? because i need