2x^3+3x^2+9x+7 is the answer
Answer:
Solution : x = 2
y = 3
Step-by-step explanation:
x+y = 2y-x+1=5
x + y = 5 --------> equ 1
2y - x +1 = 5
2y - x = 5 - 1
2y - x = 4
-x + 2y = 4--------> equ 2
add equ 1 & equ 2
3y =9
y = 9/3 = 3
Put y = 3 in equ 1
x + 3 = 5
x = 5 - 3 = 2
Solution : x = 2
y = 3
Answer:
$625
Step-by-step explanation:
If Todd has to pay $14,000 in tuition for his school each year and uses $6,500 in financial aid each year all for 2 years, the money he needs to save can be modeled by:
2(-$14000 + $6500) + 2(12x) = 0.
x is the minimum amount of money he needs to save in order to cover this expense without debt.
Thus 2(-$14000 + $6500) + 2(12x) = 0 →
2(-$7500) + 24x = 0 → -$15000 + 24x = 0 →
24x = $15000 → x = $625
The discount was 85% off.
