Angela needs $120 for a new skateboard. She has $25 in her wallet and is going to sell her comic book for $5 each to earn the rest of the money that she needs. 1. Write an equation that models the amound of comic books (b) she needs to sell in order to buy the skateboard.

Step-by-step explanation:

Step one:

given data

Cost of skateboard= $120

if she has $25 at hand then she will need 120-25= $95 to balance up for the board.

Step two:

We are told that she will sell each book for $5

then for her to realize $95 she has to sell

95/5=19

therefore she has to sell a minimum of 19 books

the equation is

let the number of books be b

b>=19

differnt varibles efect the range

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.