Try this:
8% of 2570 is 2570*0.08=205.6 units
and since the number of units were increasing every month you can multiply that by seven giving you 1439.2, then you can subtract that by your final amount of sales giving you the initial amount of 1130.8 units.
Yvaries as x means
y=kx where k is constant
y=2.5
x=6
find k
2.5=k6
divide bot sides by 6
2.5/6=k (leave as that an simplfy later)
if x=4, what is y
y=(2.5/6)*4
y=10/6
y=5/3
y=1 and 2/3
3m-3m=0, simply by using 3-3 :)
I’m confused, what’s the questions asking for?
Write the equation of a line that passes through (-10,8) and (-8,-5) in slope intercept form.
y = -6.5x -57