£1.60 each notebooks
3 pencils times 21p= 63p
2pens times 37p=74p
3sharpeners times 86p=258p
63p+74p+258p=£3.95
£8-3.95=£4.05
£4.05-£1.60= £2.45
£2.45-£1.60=85p
So… he bought 2 notebooks
Answer:
f(x) = 6x² -25x -9
Step-by-step explanation:
6x² - 25x -9 = (2x - 9) (3x + 1)
x = (2/9) or (- 1/3)
You need to get the r by itself on one side, with the constants (numbers without the r) on the other side.
A=124
B=0.7x+75
124<0.7x+75
49<0.7x
70<x
When you drive more than 70 miles, company A is cheaper