Calculate the length of the circumference of a circle with diameter of 7cm? ~3

What is the value of -3/4 to the 4th power? -256/81 -81/256 81/256 256/81

Note: enter your answer and show all the steps that you use to solve this problem in the space provided. estimate 49% of 162. use mental math to calculate 49% of 162.

(08.06 mc) devon and his friends bought strawberry wafers for $3 per packet and chocolate wafers for $1 per packet at a carnival. they spent a total of $30 to buy a total of 22 packets of wafers of the two varieties. part a: write a system of equations that can be solved to find the number of packets of strawberry wafers and the number of packets of chocolate wafers that devon and his friends bought at the carnival. define the variables used in the equations. part b: how many packets of chocolate wafers and strawberry wafers did they buy? explain how you got the answer and why you selected a particular method to get the answer