What simple interest rate is needed for $15,000 to double in 8 years ? Round to the nearest tenth​

Given the statements, "a square root of 16 is 4," and "a square root of 9 is -3," complete the following blanks with the correct truth-values. p is and q is , so the statement, "a square root of 16 is 4 or a square root of 9 is -3" is .

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1