Solve the word problem. olivia has 21 coins in her drawer. nine of the coins are nickels, and the rest are pennies. what is the total value of the coins in her drawer? a. 21¢ b. 30¢ c. 45¢ d. 57¢

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Which expression is equivalent to 16 in exponential form? a) 4 × 4 b) 8 × 2 c) 23 d) 24