What is the correct solution

-3 (6-r) = 6

-18-3r=6

-3r=24

r=-8

If n is an even integer between 1 and 1989, what is the probability that n^2 is divisible by 8

Solve the following equation for x: 64 = 23x. A. x = 2.5 B. x = 1 C. x = 2 D. x = 3 I think it's C.) x = 2 but I can't be sure

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For number 913,256 which is the digit in the ten thousands place

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