Estimate to find the quotient of 828 ÷ 23. Then, find the exact quotient and use multiplication to check your answer. HELP ASAP

Which statements about these triangles is true

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.