Jarred wants to buy a go-cart for $1,200. His part-time job pays him $160 a week. He has already saved $400. Which inequality represents the minimum number of weeks (w) he needs to work, in order to have enough money to buy the go-cart? A: 400w + 160w >= 1200 B: 400 + 160w = 1200

Anyone know? will mark brainliest if you're correct!

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)