Evaluate f(x) = 4 - 5x for f(-2)
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Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.