It is the year 2235. Scientists have unearthed a rock sample from an old nuclear power plant where there was a big nuclear meltdown in 1995. This
rock sample contains 0.2 grams of 238 Pu How much 238 Pu was in the sample
initially? Half-life for Plutonium-238 is approximately 87 years.
Round to the nearest tenth (one decimal place).

john earns $14.00 for two hours of work.

square root

step-by-step explanation:

35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2