Answer:
Step-by-step explanation:
Given
comparing it with standard equation 
so 4a=1
so Focus of parabola is (0,0)
directrix
y=-a
here 
I'm assuming the funds earn 5% yearly?
Call x the amount he saves every year. The first year's deposit will be multiplied by 1.05 three times, the next will be multiplied by 1.05 twice, the third will be multiplied by 1.05 once, and the fourth will not generate interest (as it will immediately be used to buy the car).
Therefore, x(1.05^3+1.05^2+1.05+1)=21000, so 4.31x=21000. Dividing by 4.31, we see that x is approximately equal to 4872.
Where there are mountains there are sherpas, where there are oceans there are fisherman, and where there are caves there are explorers
B
explanation: cuz i said so
you're welcome
Hey there, just multiply 2.2 by 5, 2.2×5=11. Therefore, the lowest common multiple of 2.2 and 5 is 11.
