I'll assume you're asking for the initial price
Let's use x to represent it
The initial price plus 40 percent of that is $294
Let's write that out mathematically
x + (40/100)x = 294
x + 0.4x = 294
1.4x = 294
x = 210
The initial price is $210
70/28 = x/250
this however is not an equation it is a proportion so you would not be able to solve using systems of equations but you could use cross multiplication to solve this problem as well
Thirty more than x = 30 + x
.80 x 520= 416. ——————————-
Answer:
A) {-1,2}
Step-by-step explanation:
square both side of the equation. Then:
x+2=x^2
simplify:
x^2-x-2=0
factor:
(x+1)(x-2)=0
then:
x=-1, x=2
