Aroller coaster starts from a deck at an elevation of 20 feet above the ground. on the first hill it climbs 78 feet and then drops 85 feet. on the second hill the coaster climbs 103 feet and then drops 110 feet. how far below or above the deck is the coaster after the second hill?

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.

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4