Ineed i go to bed in 10 minutes and this assignment locks !
what is the equation in point slope form of the line that passes through the point (3, 1) and has a slope of –2 ?

Find the value of the variable and the length of each secant segment

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax