First equation:
y=10x+150
y=25x
10x+150=25x
15x=150
x=10
so, 10 weeks
EDIT:
how many dollars dey save? dunno
jkkkkk
For John
150+10(10)=
150+100=
250
For Erin
They both equal
The least common multiplier of 18 and 24 is 72. Because all of 18's multipliers do not match up with 24's multipliers until 72, it is the LCM
Selections 2, 3, 5, 6 are polynomials.
1 and 4 are not. The coefficients don't have to be integers, but the powers of the variables need to be positive integers. In 1, you have x^-1. in 4, you have x^(1/2).
