Sarah got 16 out of 20 questions correct on a math quiz is each question was worth the same number of pints and the test was worth 50 points total, what was sarah’s score

What are the domain and range of the function? f(x) = -4 (sqrt)x

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

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.