Marco walks dogs on the weekend. He charges $10 for every hour of waiking. Leth equal the number of hours of walking and e equal his earnings. Which statements are true? Mark all that apply. a. The equation e = 10h shows how much Marco earns on a given job.

b. If Marco works 5 dogs for 12 minutes each, he will earn $10.

c. If Marco walks 2 dogs for 1 hour each, he will earn $10.

d. Marco will earn the same amount of money whether he walks 1 dog for 2
hours or two dogs for 1 hour each.

e. If Marco raises his hourly rate next week by $3, the new equation to
calculate his earnings is € =10h + 3.

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11