Find the difference. (9a^4+2a^2+-7a^2+1)
a. 25a^4-5a^2-4
b. -7a-5a^2+6
c. 25a^8+9a^4+6
d. -7a^4+9a^2+4

Graph the equation by plotting point x=2

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3