What is the value of the expression shown below?

3 over 6 to the power of 2 + 7 × 4 − 5

a. 6 and 1 over 4
b. 6 and 1 over 2
c. 23 and 1 over 4
d. 23 and 1 over 2

Asequence has a common ratio of and f(5) = 81. which explicit formula represents the sequence? f(x) = 24 f(x) = 16 f(x) = 24 f(x) = 16

The ideal weight of a nickel is 0.176 ounce. to check that there are 40 nickels in a roll, a bank weighs the roll and allows for an error of 0.015 ounce in total weight

Based on the diagrams, what is the value of x?