Y=2.5x+30 - the function where y = the total cost and x = the # of notebooks.
40 = 2.5x + 30 - Plug 40 into y and solve
10= 2.5x
x = 4, the number of notebooks she bought
Alison has 18 dimes and 7 nickels
You can simplify the fraction to get 2/5. If you convert this into a decimal you will get 0.4, so D is your answer.
Answer:to graph y=2 go to the y axis and go to positive 2 and make a horizontal straight line. And to graph x=4 go to the x axis and go to positive 4 and make a vertical straight line.
and to graph y=x+2 make a dot on (0,2) and (-2,0) then make a line thru them using a ruler or straight object. (also i seriously recommend using desmos to graph online its super easy to use :) )
Answer:
A. 0 real roots
Step-by-step explanation:
This function has 0 real roots because it touches the x-axis 0 times.
