Mark owns a lawn service company. He used the function f (t) = 10t + 25 to determine the cost of his services where t is the time, in hours, he spend
mowing. How much will Mark charge for working 2.5 hours? (Only enter a number
in the answer box - no symbols.)

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