From 1998 to 2012 (168 months), 29 earthquakes of magnitude 6.5 or higher occurred in Papua New Guinea. This data is used to help with future predictions and planning. The number of months between earthquakes of magnitude 6.5 or higher can be modeled by an exponential distribution
a) From the data, what is the expected number of months to wait between earthquakes? Round to 3 decimal places
b) If an earthquake has just occurred, find the probability the next earthquake occurs during the following 3 months.

answer: i don't understand it

step-by-step explanation: sorry

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.