The explicit formula LaTeX: a_n=-11+4\left(n-1\right)a n = − 11 + 4 ( n − 1 ) represents which of the following sequences?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?