For her vacation mrs. andrews bought $300 worth of traveler's checks in $10 and $20 denominations. if she has 22 travelers checks in all, how many of each denomination does she have?

let x represent the number of $10 traveler's checks she has. which expression represents the value of the $20 traveler's checks she has?

20 x
20(22 - x)
20(22)

the correct answer is the second option

its c or d   take a lucky guess my dude

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,