This equation shows how rosa's bank account balance is related to the number of raffle tickets she purchases. d = -3.4r + 63.6 the variable r represents the number of raffle tickets she purchases, and the variable d represents the balance of her bank account. how many tickets does rosa need to buy to get the account balance down to $22.80?

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.