Step-by-step explanation:
solve the equation:
5x-10=4x+20
Ok I’ll break this down so it’s easier to understand:
So you start of with $80
The first step is to find 20% off
An easy way to find 20% is to divide it by 5.
80/5= 16
And since it’s 20% OFF we subtract 16 from 80
80-16= 64
Next we need to do the coupon
It is $5 off so
64-5= 59
And finally the rebate which is $2
59-2= 57
Answer:
57
f(x) is a linear function, so both the domain and the range are the set of real numbers.
7 + 2x = 10
subtract 7 from both sides: 2x = 3
divide by 2: x = 1.5
x = 1.5