Malik made the number pattern 1.3.7. 15 following a rule. The rule is to double the number and add one. Which number would come after 15?

What is the value of r of the geometric series?

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2

Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?