(a.) constant of proportionality k
y = kx
y/x = k
use the point (1,30)
30 = k
The slope will be the same answer, theyre the same thing
use two points (1,30) and (2,60)
m = (60-30)/(2-1) = 30
(b.) The equation for the line is: y = 30x
Answer:
Last one: ⅗
Step-by-step explanation:
cosF = adjacent/hypotenuse
cosF = FD/FE
= 6/10
= 3/5
25% off means that they are paying 75% of the original price. Multiply d by 75%:
0.75d
Now you need to multiply the price by 1 plus the sales tax to get the total cost:
0.75d x 1.08
Simplify by multiplying 0.75 by 1.08 to get:
0.81d
