Solve for z. Determine if the solution(s) are extraneous. 5 11 I =15 15+205 2 15-205 C not extraneous not extraneous C

After helping his neighbor mow lawns, Joe decides to start his own lawn service business. He decides to start off on a small scale until he has builds up a customer base. Joe calculates his costs to be $4,880 which includes a John Deere riding mower, a leaf blower, edger and weed eater, and miscellaneous yard tools. He figures that it will cost approximately $9 to mow each lawn and will charge on average $70 to each customer. Let x be the number of lawns mowed. (a) Write the revenue function. (b) Write the cost function. (c) Joe must mow how many lawns to break even? (d) State the cost and the revenue at the break-even point. The revenue and the cost at the break-even point are both equal to what in dollars?

A chef purchases whole chickens because they cost less per pound than fabricated cuts and the carcasses can be used to make stock for soup. If the soup consists of 9 parts chicken stock, 2 parts chicken, 1.5 parts vegetables and 1.5 parts noodles, all by weight, how much of each ingredient is needed to make 2 gallons of soup?

It takes 12 units of carbohydrates and 6 units of protein to satisfy Jacob's minimum weekly requirements. The meat contains 2 units of carbohydrates and 2 units of protein per pound. The cheese contains 3 units of carbohydrates and 1 unit of protein per pound. The meat costs $3.40 per pound and the cheese costs $4.50 per pound. How many pounds of each are needed to fulfill the minimum requirements at minimum cost? What is Jacob's minimum cost? He should buy pound(s) of meat and pound(s) of cheese. (Round your answer to the nearest tenth.) The minimum cost is $. (Round to the nearest cent as needed.) ...

Part c? I'm stuck, I'm just trying to learn problems like these to help me study

I WANT EXCEL SOLUTION

I need some explanation on these 3 problems.

A tortoise and hare are competing in a 400-meter race. The arrogant hare gives the tortoise a 220-meter head start. When the start gun is fired, the hare begins running at a constant speed of 3.5 meters per second and the tortoise begins crawling at constant speed of 1.5 meters per second. Take out a piece of paper and read the above problem context again. You will prepare your written work and solutions on your own paper and upload it and the end of this question. Complete the problem solving process by: i. reading and re-reading the problem to identify the quantities in the situation; ii. making a drawing to represent the relevant quantities in the situation; iii. and defining the variable t to represent the number of seconds since the start of the race. a. Define a function f to determine the distance of the tortoise from the finish line in terms of the number of seconds, t, since the start of the race. Preview Solve f(t) = 0 and describe what your solution represents. t = Preview…

I've figured out the first part of this problem but I can't seem to figure out the other parts of this problem. Please help

please don't make calculations long make it short and simple Please please answer fast please answer as fast as possible please it's super important and super urgent Please please answer as fast as possible please I’m begging please answer fast I need it in less than 40 minutes