In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Gloria has scored 89, 81, and 83 on the first three. What range of scores on the fourth test will give Gloria a C for the semester (an average between 70 and 79, inclusive)? Assume that all test scores have a non-negative value.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

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step-by-step explanation:

answer: idk wbu

step-by-step explanation: umm..