Consider the following definition of the "4" symbol. definition. let x and y be integers. write x 4 y if 7x5y 3k for some integer k. give a direct proof of the following statement. if a b and c4 d, then ac 4bd. and there exists some integer k such that 7c5d = 4 b and c

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )