Every week (w) sandra will save $10. which algebraic expression could sandra use to calculate how much money she has saved after any number of weeks?

answer: a. 74

step-by-step explanation:

it shows divided evenly, so add the 37+37 = 74

50-38=12

step-by-step explanation:

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation:

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,