A is the right one:
a. 3:4=9:12
3×3:4×3=9:12
slope (m) = rate. $40 per hour is the rate, so m = 45
y-intercept (b) = one time fee. $45 is the flat rate which is the one time fee, so b = 45
y = mx + b
y = 40x + 45
Answer: A
Step-by-step explanation:
हवा से भी तेज चलने वाली रोशनी है।
light travels faster than air
It should be 12×18. 1:3 means you take where it's at, at 1 and multiply it's size by 3.
