The answer will be “13.44” .
Answer:
The number is infinity
Step-by-step explanation:
Let the unknown number be x
if the number increased by three, then we have;
x + 3
Also quadrupling that number increased by five all divided by four is expressed as;
(4x+5)/4
Equating bith expressions and calculating x;
x+3 = (4x+5)/4
cross multiply;
4(x+3) = 4x + 5
4x+12 = 4x + 5
4x-4x = 5 - 12
0x = -7
x = -7/0
x = ∞
Hence the number is infinity
Answer:
y = 3*(x^2) + 9x -30
Step-by-step explanation:
y=3(x+5)(x-2)
y = (3*x + 3*5) * (x - 2)
y = (3*x + 15) * (x - 2)
y = 3*x*x + 3*x*(-2) + 15*x + 15*(-2)
y = 3*(x^2) - 6x + 15x - 30
y = 3*(x^2) + 9x -30
