$6.89
The book is $10. Minus the 35% discount ($10X0.35=$3.50). So the subtotal is $10-$3.50=$6.50.
Tax is 6%. So 0.06X$6.50=$0.39
The total including tax is $6.50+$0.39=$6.89
Think of dividing by 2 splitting it in half, if you round it you get about 1500 then split that in half. it would be around 750.
For #11, the answer is the tall sipper thing. The formula for area in a cylinder is r squared times height. you did diameter squared, not radius squared
The area of the given triangle is 25 square cm.
Step-by-step explanation:
Step 1:
First, we plot the coordinates of the triangle.
The right bottom end of the triangle is at (15, 5).
The bottom left end of the triangle is at (10, 5).
The top left end of the triangle is (10, 5).
The area of a triangle is given by half the product of its base length and the height of the triangle.
Step 2:
The area of a triangle
The base is the distance between the bottom two points. The base length
cm.
The height is the distance between the two left points. The height
cm.
The area of the triangle 
The area of the given triangle is 25 square cm.