$6 . It will cost $6 because spending 6 dollars , 50 times will equal $300
Answer:
x = -9/5
y = 16/5
Step-by-step explanation:
-3x-2y=-1 first you need to multiply the numerator by 3 so when adding
4x+6y=12 the y's cancel and you get a single variable
3(-3x-2y=-1) —> -9x - 6y = -3 then you add the like terms
4x+6y=12 —> 4x + 6y = 12
(-9x+4x) + (6y - 6y) = (-3 + 12)
-5x = 9 then you divide by -5
x = -9/5
then you plug this in to either equation
4(-9/5) + 6y = 12
-36/5 + 6y = 12 then you add 36/5 to both sides
6y = 96/5 then you divide by 6
y = 16/5
80+20 is ten times 8+2, if you factor out 10 from 80+20 we get 10(8+2)
Plug in the info given and solve:
h = 21(1.09)^5
h = $32.31
Answer: x = 1/6 or x = 0.1666666666666...
Hope this helps!