Alyssa had 284 dollars to spend on 7 books. after buying them she had 18 dollars. how much did each book cost

Cost of each of the seven book of Alyssa is 38 dollars.

Solution:

Given that initial amount with Alyssa = 284 dollars

Number of books she purchased = 7  

Amount remaining after buying the books = 18 dollar

Lets first find amount spent by her on 7 books

Amount spent on seven books = Initial amount – Amount left after buying books

= 284 – 18 = 266

So Amount spent on seven books = 266.

to solve further we need to consider that cost of each book is  same.

lets assume cost of 1 book = "x" dollars

So cost of 7 books = 7x dollars

Amount spent on seven book = cost of 7 books

=> 266 = 7x  

solving the above equation for x

=> x = 266/7 = 38 dollars

Hence cost of each of the seven book is x = 38 dollars.

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

care to share were the trapezoid shown is ?