What does r equal if -3(2r + 7) = 3

What is r i 4.5+10r=-6.5 with work pls

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240

Let x = a + bi and y = c + di and z = f + gi. which statements are true?