Steve opens a bank account. The amount, in dollars, in the account z weeks after the account is opened can be modeled by function f. If Steve has 85,000 in the account 20 weeks after the account is opened, which Two of the following must be true?

A. F(20) = 5,000
B. F(5,000) = 20
C. In the xy-plane, point (20,5,00) is on the graph y = f(x)
D. In the xy-plane, point (5,00,20) is on the graph y = f (x)

Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.