A linear equation in slope-intercept form from two points is given by (y - y1)/(x - x1) = (y2 - y1)/(x2 - x1).
Here, y1 = 2200, x1 = 12, y2 = 3000 and x2 = 10, then
(y - 2200)/(x - 12) = (3000 - 2200)/(10 - 12)
(y - 2200)/(x - 12) = 800/-2 = -400
y - 2200 = -400(x - 12)
y = -400x + 4800 + 2200
y=-400x+7000
Answer:
let x =the original price
then 116x/100=$39.32
116x=100×39.32
116x=3932
divide both sides by 116
116x/116=3932/116
x=33.89655
(2dp)
x=33.90
Answer:
19
Step-by-step explanation:
Given that for every 4 milkshakes sold we get $15.
⇒ 1 milkshake cost = 15 ÷ 4 = $3.75
So, if they made $71.25 in one hour then the number of milkshakes sold
= 71.25 ÷ 3.75
= 19