Suppose chocolate is on sale for $0.40 a bar and you have a coupon for $0.20 off your total purchase. write a function rule for the cost of n chocolate bar. how much would 20 chocolate bars cost?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

In the figure below, triangle rpq is similar to triangle rts. what is the distance between p and q? a. 24 b. 42 c.50 d. 54

Find the domain and range of the following function f(x) = 51x - 21+ 4