As elevation increases, temperature decreases. At which elevation will sound travel fastest? 500 meters 1,000 meters 1,500 meters 2,000 meters

What is the value of X? I need help on this please it would really help me alot Solve the triangle for all missing sides and angles Chemical energy in the form of food is changed into what? If 8,a,b,27 are in geometric sequence, find the value of a and b. In the header element, insert a navigation list containing an unordered list with the items: Home, Race Info, and FAQ. Link the items to the dr _index.html, dr_info.html, and dr_ faq.html files respectively.HomeRace infoFAQ What is the value of F ? 74,308 Problem: Round the number above to the nearest ten. PLEASE HELP DUE IN 5 MINUTES!! NO LINKS! HELP PLEASE!! can someone help me ? Which object will take the most forceto accelerate? *4 kg6 kg8 kg02 kg a serving of crackers has 1.5 grams of fat. How many grams of fat are in 3.75 servings What type of symmetrys are shown? Find the HCF of 12 and 16 in which of the following situations would audio and a photograph be the best choice?A. When you have done a good job sounding like a famous actor or singerB. When you feel the music would make a good transition between portions of your presentationC. When you have a photo and a recording of a famous person giving a speechD. When you have a good recording of an actor reading a book aloud (MC)John wants to use a camera lens that will reproduce an image that is like what the human eye would see, without distortion or minimizing thescene that he is shooting. Which camera lens would be the best choice for this?O 300 mmO 30 mmO 50 mmO 120 mm PLEASE I NEED HELP I DONT UNDERSTAND HOW TO DO ILL GIVW MORE IF RIGHT Chin purchases five protein bars at a price of $3 each. The marginal benefit he receives from each bar is $5 for the first bar, $4.50 for the second bar, $4 for the third bar, $3.50 for the fourth bar, and $3 for the fifth bar. The marginal cost of producing the bars is $2 each. What is Chin's total consumer surplus from the five bars that he purchased please help me!a) 280in2b) 300in2c) 150in2d) 100in2 Scientists observed that the populations of top-level consumers in a particular ecosystem were rapidly decreasing. Further studies revealed that there was also a decline in producer productivity. Which other changes did the scientists most likely observe in the ecosystem?increased producer diversitydecreased population size at all levelsdecreased primary consumer populations onlyincreased primary and secondary consumer diversity