Exponential growth function
exponential decay function
y = a(1 + r)
y = a(1-r)"
exponential growth applications
1. annual sales for a fast food restaurant are $650,000 and are increasing at a rate of 4%)per year.
write an exponential growth function, then find the annual sales after 7 years.

you can use the formula of ś = s (1+r/100)^t

Step-by-step explanation:

where ś = sales after 7 years

t= time taken

s= initial sales

r = rate

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