It is a Saturday morning and Jeremy has discovered he has a leak coming from the water heater in his attic.
Since plumbers charge extra to come out on
weekends, Jeremy is planning to use buckets to catch
the dripping water.
He places a bucket under the drip and steps outside to
walk the dog.
After 1 1/2 hours, Jeremy had collected 1/4 cup of
water.
a. What is the rate, in cups per hour, at which the water
is leaking from the water heater?

i don't even know how to read that, ill try to do it if you translate it into english.

shell's the art director at her local community center. she paid $10 and for each child that attends she earns $4.

for each child she ears $4 that is the slope m = 4

she paid $10, that is the initial amount paid. so 10 is the y intercept b

m =4   and b = 10

y intercept is 10 so the point is (0,10)

we start graph from y intercept (0,10)

slope = 4 . we know slope = rise / run

slope = 4   or 4/1   are same

rise = 4   and run = 1

for rise we move 4 units up and for run we move 1 unit to the right

the graph is attached below

x axis is the number of child she attends

y axis is the amount   she earns

the formula for converting absorbance to transmittance goes as:

a = log (1/t)  a = 2 - log(%t)  10^a = 1/t  t = 10^-a  %t = 100(10^-a)

so at the given value of a,   a = 1.5

%t = 100(10^-1.5)

%t = 3.16%