Type the correct answer in the box. round your answer to the nearest whole number.
if the current trend of registration continues, there will be approximately [ ]participants registered 10 days after registration opens.

this above is part b. i need with filling in the blank. will give 15 points for . it's for plato. and i'm add an attachment for part a and the work i have for part a.

Part A y = 15(1 + 0.4)^x.

Part B  434 after 10 days.

Step-by-step explanation:

Part A.

21 = 15 ( 1 + r)^1

15 + 15r = 21

15r = 6

r = 6/15 = 0.4

So the equation is

y = 15(1 + 0.4)^x.

Part B.

So after 10 days  x = 10

y = 15(1 + 0.4)^10

y = 434 to the nearest whole number.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x